#28508C#28508C

#28508C is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.4% C 0.109 H 258.4°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#28508C
RGB	rgb(40, 80, 140)
HSL	hsl(216, 56%, 35%)
HSV	hsv(216, 71%, 55%)
CMYK	cmyk(71.4%, 42.9%, 0%, 45.1%)
CIE-LAB	lab(34.15, 7.21, -37.48)
CIE-LCH	lch(34.15, 38.17, 280.89°)
OKLab	oklab(43.44% -0.0219 -0.107)
OKLCH	oklch(43.44% 0.109 258.4)
XYZ	xyz(8.4756, 8.0810, 25.9190)
Luminance	0.0808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28508C #8C6428

analogous

#28828C #28508C #32288C

triadic

#28508C #8C2850 #508C28

tetradic

#28508C #8C2882 #8C6428 #288C32

square

#28508C #8C2882 #8C6428 #288C32

split-complementary

#28508C #8C3228 #828C28

monochromatic

#0D1A2D #1A355C #28508C #366BBC #5E8CD1

Accessibility & contrast

On white

8.03

#28508C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#28508C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28508C

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28508C	#FFFFFF	#000000	##FFFFFF
##28508C	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34558E

Deuteranopia (green-blind)

#234C8B

Tritanopia (blue-blind)

#005E67

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #28508c;
/* rgb */ color: rgb(40, 80, 140);
/* oklch */ color: oklch(43.4% 0.109 258.4);

Tailwind

colors: {
  custom: {
    50: '#6f80ae',
    500: '#28508c',
    950: '#000000',
  },
}

SCSS

$custom: #28508c;
$custom-light: #6f80ae;
$custom-dark: #000000;

JSON

{
  "hex": "#28508c",
  "rgb": {
    "r": 40,
    "g": 80,
    "b": 140
  },
  "hsl": {
    "h": 216,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.43441,
    "c": 0.10924,
    "h": 258.4
  },
  "luminance": 0.08082
}

Semantic roles & 50–950 ramp

primary

#28508C

secondary

#B6915A

accent

#A349DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #28508C

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

Preview Lab → · Contrast checker → · Palette generator →