#28488B#28488B

#28488B is a dark, moderate blue. Relative luminance 0.070; OKLCH L 41.5% C 0.118 H 263.1°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#28488B
RGB	rgb(40, 72, 139)
HSL	hsl(221, 55%, 35%)
HSV	hsv(221, 71%, 55%)
CMYK	cmyk(71.2%, 48.2%, 0%, 45.5%)
CIE-LAB	lab(31.69, 12.19, -40.81)
CIE-LCH	lch(31.69, 42.59, 286.63°)
OKLab	oklab(41.52% -0.0142 -0.1169)
OKLCH	oklch(41.52% 0.118 263.1)
XYZ	xyz(7.8510, 6.9491, 25.3487)
Luminance	0.0695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28488B #8B6B28

analogous

#28798B #28488B #39288B

triadic

#28488B #8B2848 #488B28

tetradic

#28488B #8B2879 #8B6B28 #288B39

square

#28488B #8B2879 #8B6B28 #288B39

split-complementary

#28488B #8B3928 #798B28

monochromatic

#0D172C #1A2F5B #28488B #3661BB #5D82D0

Accessibility & contrast

On white

8.79

#28488B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#28488B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28488B

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28488B	#FFFFFF	#000000	##FFFFFF
##28488B	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254F8D

Deuteranopia (green-blind)

#0F468A

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #28488b;
/* rgb */ color: rgb(40, 72, 139);
/* oklch */ color: oklch(41.5% 0.118 263.1);

Tailwind

colors: {
  custom: {
    50: '#6f7aad',
    500: '#28488b',
    950: '#000000',
  },
}

SCSS

$custom: #28488b;
$custom-light: #6f7aad;
$custom-dark: #000000;

JSON

{
  "hex": "#28488b",
  "rgb": {
    "r": 40,
    "g": 72,
    "b": 139
  },
  "hsl": {
    "h": 220.606,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.41524,
    "c": 0.11778,
    "h": 263.1
  },
  "luminance": 0.0695
}

Semantic roles & 50–950 ramp

primary

#28488B

secondary

#B69859

accent

#AE49DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #28488B

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

Preview Lab → · Contrast checker → · Palette generator →