#2523AA#2523AA

#2523AA is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.6% C 0.203 H 271.6°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#2523AA
RGB	rgb(37, 35, 170)
HSL	hsl(241, 66%, 40%)
HSV	hsv(241, 79%, 67%)
CMYK	cmyk(78.2%, 79.4%, 0%, 33.3%)
CIE-LAB	lab(25.25, 46.82, -70.23)
CIE-LCH	lch(25.25, 84.40, 303.69°)
OKLab	oklab(37.59% 0.0055 -0.2033)
OKLCH	oklch(37.59% 0.203 271.6)
XYZ	xyz(8.6172, 4.4967, 38.4362)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2523AA #A8AA23

analogous

#2364AA #2523AA #6923AA

triadic

#2523AA #AA2523 #23AA25

tetradic

#2523AA #AA2364 #A8AA23 #23AA69

square

#2523AA #AA2364 #A8AA23 #23AA69

split-complementary

#2523AA #AA6923 #64AA23

monochromatic

#0F0E44 #1A1977 #2523AA #3735D5 #6968E0

Accessibility & contrast

On white

11.05

#2523AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2523AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2523AA

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2523AA	#FFFFFF	#000000	##FFFFFF
##2523AA	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AE

Deuteranopia (green-blind)

#0035A8

Tritanopia (blue-blind)

#004D66

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2523aa;
/* rgb */ color: rgb(37, 35, 170);
/* oklch */ color: oklch(37.6% 0.203 271.6);

Tailwind

colors: {
  custom: {
    50: '#7861c5',
    500: '#2523aa',
    950: '#000000',
  },
}

SCSS

$custom: #2523aa;
$custom-light: #7861c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2523aa",
  "rgb": {
    "r": 37,
    "g": 35,
    "b": 170
  },
  "hsl": {
    "h": 240.889,
    "s": 65.854,
    "l": 40.196
  },
  "oklch": {
    "l": 0.37587,
    "c": 0.20336,
    "h": 271.6
  },
  "luminance": 0.04498
}

Semantic roles & 50–950 ramp

primary

#2523AA

secondary

#C4C663

accent

#E93FE6

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2523AA

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

Preview Lab → · Contrast checker → · Palette generator →