#2523A8#2523A8

#2523A8 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.4% C 0.201 H 271.7°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#2523A8
RGB	rgb(37, 35, 168)
HSL	hsl(241, 66%, 40%)
HSV	hsv(241, 79%, 66%)
CMYK	cmyk(78%, 79.2%, 0%, 34.1%)
CIE-LAB	lab(25.02, 46.17, -69.40)
CIE-LCH	lch(25.02, 83.36, 303.63°)
OKLab	oklab(37.36% 0.0059 -0.2009)
OKLCH	oklch(37.36% 0.201 271.7)
XYZ	xyz(8.4295, 4.4216, 37.4474)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2523A8 #A6A823

analogous

#2364A8 #2523A8 #6723A8

triadic

#2523A8 #A82523 #23A825

tetradic

#2523A8 #A82364 #A6A823 #23A867

square

#2523A8 #A82364 #A6A823 #23A867

split-complementary

#2523A8 #A86723 #64A823

monochromatic

#0F0E43 #1A1875 #2523A8 #3634D5 #6866DF

Accessibility & contrast

On white

11.14

#2523A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#2523A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2523A8

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2523A8	#FFFFFF	#000000	##FFFFFF
##2523A8	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AC

Deuteranopia (green-blind)

#0035A6

Tritanopia (blue-blind)

#004C65

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2523a8;
/* rgb */ color: rgb(37, 35, 168);
/* oklch */ color: oklch(37.4% 0.201 271.7);

Tailwind

colors: {
  custom: {
    50: '#7861c3',
    500: '#2523a8',
    950: '#000000',
  },
}

SCSS

$custom: #2523a8;
$custom-light: #7861c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2523a8",
  "rgb": {
    "r": 37,
    "g": 35,
    "b": 168
  },
  "hsl": {
    "h": 240.902,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37358,
    "c": 0.20099,
    "h": 271.7
  },
  "luminance": 0.04423
}

Semantic roles & 50–950 ramp

primary

#2523A8

secondary

#C3C562

accent

#E83FE6

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2523A8

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

Preview Lab → · Contrast checker → · Palette generator →