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Recognised as Colour

#1F2225

  • #1F2225
  • Blue
  • Dark
  • Nearest: Black

#1F2225 is a blue with RGB values 31, 34, 37 and HSL 210°, 9%, 13%. It is a dark colour, so white text on it reaches 16:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F2225#1F2225
HEX#1F2225
RGBrgb(31, 34, 37)
RGB (0–1)0.1216, 0.1333, 0.1451
RGB percentages12.2%, 13.3%, 14.5%
HSLhsl(210, 8.8%, 13.3%)
HSV / HSBhsv(210, 16.2%, 14.5%)
CMYK16.2%, 8.1%, 0%, 85.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,040,357
CSS custom property--colour: #1F2225;

Brightness & contrast

Relative luminance0.01569WCAG 2.x, 0 is black and 1 is white
Perceived brightness33.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.98:1
Contrast with white15.98:1WCAG normal text: AAA
Contrast with black1.31:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#E0DDDA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#212225no red cones; affects about 1% of men; ΔE 1 from the original
Deuteranopia#202125no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#1E2323no blue cones; rare, and affects men and women equally; ΔE 2.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.98:1WCAG large text: AAA
Contrast with black, large text1.31:1WCAG large text: Fail

Named colours

Black · ΔE 13.3Dark slate grey · ΔE 21.4Dim grey · ΔE 31.5Gray · ΔE 40.6Slate grey · ΔE 40.6Light slate grey · ΔE 43.8
Nearest named CSS colourBlack (#000000)ΔE 13.29, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#25221F
Analogous#1F2525, #1F1F25
Triadic#251F22, #22251F
Split complementary#251F1F, #25251F
Tetradic#251F25, #25221F, #1F251F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7E8893
Lighter +30%#656F78
Lighter +20%#4E555D
Lighter +10%#363C41
Darker −10%#080909
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#17222D
Less saturated −25%#222222

Channel breakdown

R31
G34
B37
Red31 (12.2%)
Green34 (13.3%)
Blue37 (14.5%)
Hue210°
Saturation (HSL)8.82%
Lightness13.33%
Dominant channelBlue
Hex per channelR 1F · G 22 · B 25

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Every value on this page was computed from “1f2225” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.