#28518B#28518B

#28518B is a dark, moderate blue. Relative luminance 0.082; OKLCH L 43.6% C 0.107 H 257.4°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#28518B
RGB	rgb(40, 81, 139)
HSL	hsl(215, 55%, 35%)
HSV	hsv(215, 71%, 55%)
CMYK	cmyk(71.2%, 41.7%, 0%, 45.5%)
CIE-LAB	lab(34.39, 6.17, -36.48)
CIE-LCH	lch(34.39, 37.00, 279.60°)
OKLab	oklab(43.61% -0.0232 -0.1041)
OKLCH	oklch(43.61% 0.107 257.4)
XYZ	xyz(8.4760, 8.1992, 25.5570)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28518B #8B6228

analogous

#28828B #28518B #31288B

triadic

#28518B #8B2851 #518B28

tetradic

#28518B #8B2882 #8B6228 #288B31

square

#28518B #8B2882 #8B6228 #288B31

split-complementary

#28518B #8B3128 #828B28

monochromatic

#0D1A2C #1A355B #28518B #366DBB #5D8DD0

Accessibility & contrast

On white

7.95

#28518B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#28518B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28518B

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28518B	#FFFFFF	#000000	##FFFFFF
##28518B	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36568D

Deuteranopia (green-blind)

#264D8A

Tritanopia (blue-blind)

#005E67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #28518b;
/* rgb */ color: rgb(40, 81, 139);
/* oklch */ color: oklch(43.6% 0.107 257.4);

Tailwind

colors: {
  custom: {
    50: '#6e81ad',
    500: '#28518b',
    950: '#000000',
  },
}

SCSS

$custom: #28518b;
$custom-light: #6e81ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28518b",
  "rgb": {
    "r": 40,
    "g": 81,
    "b": 139
  },
  "hsl": {
    "h": 215.152,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.4361,
    "c": 0.10661,
    "h": 257.4
  },
  "luminance": 0.082
}

Semantic roles & 50–950 ramp

primary

#28518B

secondary

#B68F59

accent

#A149DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #28518B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →