Nerdulator> put something in

Colour

#001F4E

  • #001F4E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#001F4E is a blue with RGB values 0, 31, 78 and HSL 216°, 100%, 15%. It is a dark colour, so white text on it reaches 16.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#001F4E#001F4E
HEX#001F4E
RGBrgb(0, 31, 78)
RGB (0–1)0, 0.1216, 0.3059
RGB percentages0%, 12.2%, 30.6%
HSLhsl(216.2, 100%, 15.3%)
HSV / HSBhsv(216.2, 100%, 30.6%)
CMYK100%, 60.3%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,014
CSS custom property--colour: #001F4E;

Brightness & contrast

Relative luminance0.0153WCAG 2.x, 0 is black and 1 is white
Perceived brightness35.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.08:1
Contrast with white16.08:1WCAG normal text: AAA
Contrast with black1.31:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#FFE0B1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002550no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#001E4Dno green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#002B33no blue cones; rare, and affects men and women equally; ΔE 31.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.08:1WCAG large text: AAA
Contrast with black, large text1.31:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.7Midnight blue · ΔE 27.6Black · ΔE 36.1Dark slate grey · ΔE 40.5Rebecca purple · ΔE 40.8Steel blue · ΔE 42.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.73, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4E2F00
Analogous#00464E, #08004E
Triadic#4E001F, #1F4E00
Split complementary#4E0800, #464E00
Tetradic#4E0046, #4E2F00, #004E08

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1B76FF
Lighter +30%#005CE7
Lighter +20%#0048B4
Lighter +10%#003381
Darker −10%#000B1B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F4E
Less saturated −25%#0A2144

Channel breakdown

R0
G31
B78
Red0 (0%)
Green31 (12.2%)
Blue78 (30.6%)
Hue216.15°
Saturation (HSL)100%
Lightness15.29%
Dominant channelBlue
Hex per channelR 00 · G 1F · B 4E

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 “001f4e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.