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Recognised as Colour

#28233D

  • #28233D
  • Blue
  • Dark
  • Nearest: Black

#28233D is a blue with RGB values 40, 35, 61 and HSL 252°, 27%, 19%. It is a dark colour, so white text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#28233D#28233D
HEX#28233D
RGBrgb(40, 35, 61)
RGB (0–1)0.1569, 0.1373, 0.2392
RGB percentages15.7%, 13.7%, 23.9%
HSLhsl(251.5, 27.1%, 18.8%)
HSV / HSBhsv(251.5, 42.6%, 23.9%)
CMYK34.4%, 42.6%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,630,461
CSS custom property--colour: #28233D;

Brightness & contrast

Relative luminance0.0199WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.02:1
Contrast with white15.02:1WCAG normal text: AAA
Contrast with black1.4:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#D7DCC2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C273Eno red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#1C263Cno green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#23282Dno blue cones; rare, and affects men and women equally; ΔE 15.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.02:1WCAG large text: AAA
Contrast with black, large text1.4:1WCAG large text: Fail

Named colours

Black · ΔE 24.1Dark slate grey · ΔE 29.1Dim grey · ΔE 34.4Dark slateblue · ΔE 34.6Slate grey · ΔE 39.5Midnight blue · ΔE 40.4
Nearest named CSS colourBlack (#000000)ΔE 24.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#383D23
Analogous#232B3D, #35233D
Triadic#3D2823, #233D28
Split complementary#3D3523, #2B3D23
Tetradic#3D232B, #383D23, #233D35

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#857AB2
Lighter +30%#685B9E
Lighter +20%#53487E
Lighter +10%#3D365D
Darker −10%#13101D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#211749
Less saturated −25%#2F2F31

Channel breakdown

R40
G35
B61
Red40 (15.7%)
Green35 (13.7%)
Blue61 (23.9%)
Hue251.54°
Saturation (HSL)27.08%
Lightness18.82%
Dominant channelBlue
Hex per channelR 28 · G 23 · B 3D

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Every value on this page was computed from “28233d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.