Nerdulator> put something in

Recognised as Colour

#1B438E

  • #1B438E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1B438E is a blue with RGB values 27, 67, 142 and HSL 219°, 68%, 33%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1B438E#1B438E
HEX#1B438E
RGBrgb(27, 67, 142)
RGB (0–1)0.1059, 0.2627, 0.5569
RGB percentages10.6%, 26.3%, 55.7%
HSLhsl(219.1, 68%, 33.1%)
HSV / HSBhsv(219.1, 81%, 55.7%)
CMYK81%, 52.8%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,786,766
CSS custom property--colour: #1B438E;

Brightness & contrast

Relative luminance0.062WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.37:1
Contrast with white9.37:1WCAG normal text: AAA
Contrast with black2.24:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#E4BC71

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#104C91no red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#00418Dno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#005562no blue cones; rare, and affects men and women equally; ΔE 45.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.37:1WCAG large text: AAA
Contrast with black, large text2.24:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.6Midnight blue · ΔE 22.2Rebecca purple · ΔE 28.1Slate blue · ΔE 28.8Royal blue · ΔE 28.9Steel blue · ΔE 32.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.59, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E661B
Analogous#1B7C8E, #2D1B8E
Triadic#8E1B43, #438E1B
Split complementary#8E2D1B, #7C8E1B
Tetradic#8E1B7C, #8E661B, #1B8E2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8CACE9
Lighter +30%#618EE1
Lighter +20%#366FD9
Lighter +10%#2357B9
Darker −10%#132F63
Darker −20%#0B1B38
Darker −30%#03060D
Darker −40%#000000
More saturated +25%#063DA3
Less saturated −25%#304979

Channel breakdown

R27
G67
B142
Red27 (10.6%)
Green67 (26.3%)
Blue142 (55.7%)
Hue219.13°
Saturation (HSL)68.05%
Lightness33.14%
Dominant channelBlue
Hex per channelR 1B · G 43 · B 8E

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 “1b438e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.