#2528A4#2528A4

#2528A4 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.6% C 0.192 H 271.5°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#2528A4
RGB	rgb(37, 40, 164)
HSL	hsl(239, 63%, 39%)
HSV	hsv(239, 77%, 64%)
CMYK	cmyk(77.4%, 75.6%, 0%, 35.7%)
CIE-LAB	lab(25.53, 42.09, -66.13)
CIE-LCH	lch(25.53, 78.39, 302.48°)
OKLab	oklab(37.59% 0.0049 -0.1915)
OKLCH	oklch(37.59% 0.192 271.5)
XYZ	xyz(8.2203, 4.5903, 35.5676)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2528A4 #A4A125

analogous

#2567A4 #2528A4 #6225A4

triadic

#2528A4 #A42528 #28A425

tetradic

#2528A4 #A42567 #A4A125 #25A462

square

#2528A4 #A42567 #A4A125 #25A462

split-complementary

#2528A4 #A46225 #67A425

monochromatic

#0E1040 #1A1C72 #2528A4 #3539D1 #676ADD

Accessibility & contrast

On white

10.95

#2528A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#2528A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2528A4

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2528A4	#FFFFFF	#000000	##FFFFFF
##2528A4	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A8

Deuteranopia (green-blind)

#0036A2

Tritanopia (blue-blind)

#004C64

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2528a4;
/* rgb */ color: rgb(37, 40, 164);
/* oklch */ color: oklch(37.6% 0.192 271.5);

Tailwind

colors: {
  custom: {
    50: '#7664c0',
    500: '#2528a4',
    950: '#000000',
  },
}

SCSS

$custom: #2528a4;
$custom-light: #7664c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2528a4",
  "rgb": {
    "r": 37,
    "g": 40,
    "b": 164
  },
  "hsl": {
    "h": 238.583,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.3759,
    "c": 0.19152,
    "h": 271.5
  },
  "luminance": 0.04591
}

Semantic roles & 50–950 ramp

primary

#2528A4

secondary

#C2C062

accent

#E242E6

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #2528A4

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

Preview Lab → · Contrast checker → · Palette generator →