Nerdulator> put something in

Recognised as Colour

#1B58F4

  • #1B58F4
  • Blue
  • Dark
  • Nearest: Medium slateblue

#1B58F4 is a blue with RGB values 27, 88, 244 and HSL 223°, 91%, 53%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#1B58F4#1B58F4
HEX#1B58F4
RGBrgb(27, 88, 244)
RGB (0–1)0.1059, 0.3451, 0.9569
RGB percentages10.6%, 34.5%, 95.7%
HSLhsl(223.1, 90.8%, 53.1%)
HSV / HSBhsv(223.1, 88.9%, 95.7%)
CMYK88.9%, 63.9%, 0%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,792,244
CSS custom property--colour: #1B58F4;

Brightness & contrast

Relative luminance0.13744WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.6:1
Contrast with white5.6:1WCAG normal text: AA
Contrast with black3.75:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#E4A70B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0072F9no red cones; affects about 1% of men; ΔE 18.6 from the original
Deuteranopia#005EF1no green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#00829Eno blue cones; rare, and affects men and women equally; ΔE 84.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.6:1WCAG large text: AAA
Contrast with black, large text3.75:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 19Royal blue · ΔE 22.8Slate blue · ΔE 25.2Blue violet · ΔE 30.2Dark orchid · ΔE 33.2Dark blue · ΔE 33.7
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 19.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F4B71B
Analogous#1BC4F4, #4A1BF4
Triadic#F41B58, #58F41B
Split complementary#F44B1B, #C4F41B
Tetradic#F41BC5, #F4B71B, #1BF44B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEE7FD
Lighter +30%#ADC3FB
Lighter +20%#7C9FF9
Lighter +10%#4C7CF6
Darker −10%#0A42D2
Darker −20%#0833A1
Darker −30%#052471
Darker −40%#031440
More saturated +25%#1053FF
Less saturated −25%#3965D6

Channel breakdown

R27
G88
B244
Red27 (10.6%)
Green88 (34.5%)
Blue244 (95.7%)
Hue223.13°
Saturation (HSL)90.79%
Lightness53.14%
Dominant channelBlue
Hex per channelR 1B · G 58 · B F4

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “1b58f4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.