#2528A8#2528A8

#2528A8 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 38.0% C 0.196 H 271.2°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#2528A8
RGB	rgb(37, 40, 168)
HSL	hsl(239, 64%, 40%)
HSV	hsv(239, 78%, 66%)
CMYK	cmyk(78%, 76.2%, 0%, 34.1%)
CIE-LAB	lab(25.97, 43.44, -67.83)
CIE-LCH	lch(25.97, 80.55, 302.64°)
OKLab	oklab(38.03% 0.0042 -0.1964)
OKLCH	oklch(38.03% 0.196 271.2)
XYZ	xyz(8.5872, 4.7371, 37.5000)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2528A8 #A8A525

analogous

#2569A8 #2528A8 #6325A8

triadic

#2528A8 #A82528 #28A825

tetradic

#2528A8 #A82569 #A8A525 #25A863

square

#2528A8 #A82569 #A8A525 #25A863

split-complementary

#2528A8 #A86325 #69A825

monochromatic

#0F1044 #1A1C76 #2528A8 #373BD3 #696CDE

Accessibility & contrast

On white

10.78

#2528A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#2528A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2528A8

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2528A8	#FFFFFF	#000000	##FFFFFF
##2528A8	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044AC

Deuteranopia (green-blind)

#0037A6

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2528a8;
/* rgb */ color: rgb(37, 40, 168);
/* oklch */ color: oklch(38.0% 0.196 271.2);

Tailwind

colors: {
  custom: {
    50: '#7764c3',
    500: '#2528a8',
    950: '#000000',
  },
}

SCSS

$custom: #2528a8;
$custom-light: #7764c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2528a8",
  "rgb": {
    "r": 37,
    "g": 40,
    "b": 168
  },
  "hsl": {
    "h": 238.626,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.38029,
    "c": 0.19642,
    "h": 271.2
  },
  "luminance": 0.04738
}

Semantic roles & 50–950 ramp

primary

#2528A8

secondary

#C4C265

accent

#E341E7

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2528A8

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

Preview Lab → · Contrast checker → · Palette generator →