#2531A0#2531A0

#2531A0 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.6% C 0.177 H 270.4°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#2531A0
RGB	rgb(37, 49, 160)
HSL	hsl(234, 62%, 39%)
HSV	hsv(234, 77%, 63%)
CMYK	cmyk(76.9%, 69.4%, 0%, 37.3%)
CIE-LAB	lab(27.09, 35.22, -61.13)
CIE-LCH	lch(27.09, 70.55, 299.95°)
OKLab	oklab(38.58% 0.0011 -0.1769)
OKLCH	oklch(38.58% 0.177 270.4)
XYZ	xyz(8.2043, 5.1271, 33.8081)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2531A0 #A09425

analogous

#256EA0 #2531A0 #5625A0

triadic

#2531A0 #A02531 #31A025

tetradic

#2531A0 #A0256E #A09425 #25A056

square

#2531A0 #A0256E #A09425 #25A056

split-complementary

#2531A0 #A05625 #6EA025

monochromatic

#0E133D #1A226E #2531A0 #3242D0 #6470DB

Accessibility & contrast

On white

10.37

#2531A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#2531A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2531A0

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2531A0	#FFFFFF	#000000	##FFFFFF
##2531A0	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A3

Deuteranopia (green-blind)

#003A9E

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2531a0;
/* rgb */ color: rgb(37, 49, 160);
/* oklch */ color: oklch(38.6% 0.177 270.4);

Tailwind

colors: {
  custom: {
    50: '#7469bd',
    500: '#2531a0',
    950: '#000000',
  },
}

SCSS

$custom: #2531a0;
$custom-light: #7469bd;
$custom-dark: #000000;

JSON

{
  "hex": "#2531a0",
  "rgb": {
    "r": 37,
    "g": 49,
    "b": 160
  },
  "hsl": {
    "h": 234.146,
    "s": 62.437,
    "l": 38.627
  },
  "oklch": {
    "l": 0.38584,
    "c": 0.17693,
    "h": 270.4
  },
  "luminance": 0.05128
}

Semantic roles & 50–950 ramp

primary

#2531A0

secondary

#C1B760

accent

#D642E6

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2531A0

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

Preview Lab → · Contrast checker → · Palette generator →