#2523B0#2523B0

#2523B0 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.3% C 0.210 H 271.2°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX#2523B0
RGBrgb(37, 35, 176)
HSLhsl(241, 67%, 41%)
HSVhsv(241, 80%, 69%)
CMYKcmyk(79%, 80.1%, 0%, 31%)
CIE-LABlab(25.95, 48.74, -72.68)
CIE-LCHlch(25.95, 87.51, 303.85°)
OKLaboklab(38.28% 0.0042 -0.2104)
OKLCHoklch(38.28% 0.21 271.2)
XYZxyz(9.1978, 4.7289, 41.4939)
Luminance0.0473 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2523B0 #AEB023
analogous
#2368B0 #2523B0 #6C23B0
triadic
#2523B0 #B02523 #23B025
tetradic
#2523B0 #B02368 #AEB023 #23B06C
square
#2523B0 #B02368 #AEB023 #23B06C
split-complementary
#2523B0 #B06C23 #68B023
monochromatic
#100F4A #1A197D #2523B0 #3B39D8 #6D6CE2

Accessibility & contrast

On white

10.79
#2523B0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.95
#2523B0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2523B0
10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2523B0#FFFFFF#000000##FFFFFF
##2523B01.0010.791.9510.79
#FFFFFF10.791.0021.001.00
#0000001.9521.001.0021.00
##FFFFFF10.791.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0044B4
Deuteranopia (green-blind)
#0036AE
Tritanopia (blue-blind)
#004F6A
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #2523b0;
/* rgb */ color: rgb(37, 35, 176);
/* oklch */ color: oklch(38.3% 0.210 271.2);
Tailwind
colors: {
  custom: {
    50: '#7a61c9',
    500: '#2523b0',
    950: '#000000',
  },
}
SCSS
$custom: #2523b0;
$custom-light: #7a61c9;
$custom-dark: #000000;
JSON
{
  "hex": "#2523b0",
  "rgb": {
    "r": 37,
    "g": 35,
    "b": 176
  },
  "hsl": {
    "h": 240.851,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.38278,
    "c": 0.21043,
    "h": 271.2
  },
  "luminance": 0.0473
}

Semantic roles & 50–950 ramp

primary
#2523B0
secondary
#C6C867
accent
#EA3EE7
background
#F8F5FC
surface
#EFEAF8
border
#CAC6D1
text
#0B0513
muted
#7C7982

Preview Lab

Preview with #2523B0

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

Preview Lab → · Contrast checker → · Palette generator →

#2523B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva