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Recognised as Colour

#1F2430

  • #1F2430
  • Blue
  • Dark
  • Nearest: Black

#1F2430 is a blue with RGB values 31, 36, 48 and HSL 222°, 22%, 15%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F2430#1F2430
HEX#1F2430
RGBrgb(31, 36, 48)
RGB (0–1)0.1216, 0.1412, 0.1882
RGB percentages12.2%, 14.1%, 18.8%
HSLhsl(222.4, 21.5%, 15.5%)
HSV / HSBhsv(222.4, 35.4%, 18.8%)
CMYK35.4%, 25%, 0%, 81.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,040,880
CSS custom property--colour: #1F2430;

Brightness & contrast

Relative luminance0.01766WCAG 2.x, 0 is black and 1 is white
Perceived brightness36.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.52:1
Contrast with white15.52:1WCAG normal text: AAA
Contrast with black1.35:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#E0DBCF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#202531no red cones; affects about 1% of men; ΔE 0.5 from the original
Deuteranopia#1F2330no green cones; the most common form, about 1% of men; ΔE 1 from the original
Tritanopia#1A2628no blue cones; rare, and affects men and women equally; ΔE 8.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.52:1WCAG large text: AAA
Contrast with black, large text1.35:1WCAG large text: Fail

Named colours

Black · ΔE 16.7Dark slate grey · ΔE 22Dim grey · ΔE 31.4Slate grey · ΔE 38.8Gray · ΔE 40.3Light slate grey · ΔE 41.9
Nearest named CSS colourBlack (#000000)ΔE 16.67, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#302B1F
Analogous#1F2D30, #231F30
Triadic#301F24, #24301F
Split complementary#30231F, #2D301F
Tetradic#301F2D, #302B1F, #1F3023

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7583A6
Lighter +30%#5B6A8D
Lighter +20%#47526E
Lighter +10%#333B4F
Darker −10%#0B0D11
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#15203A
Less saturated −25%#282828

Channel breakdown

R31
G36
B48
Red31 (12.2%)
Green36 (14.1%)
Blue48 (18.8%)
Hue222.35°
Saturation (HSL)21.52%
Lightness15.49%
Dominant channelBlue
Hex per channelR 1F · G 24 · B 30

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Every value on this page was computed from “1f2430” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.