#2539A9#2539A9

#2539A9 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.179 H 268.7°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#2539A9
RGB	rgb(37, 57, 169)
HSL	hsl(231, 64%, 40%)
HSV	hsv(231, 78%, 66%)
CMYK	cmyk(78.1%, 66.3%, 0%, 33.7%)
CIE-LAB	lab(29.87, 33.39, -62.01)
CIE-LCH	lch(29.87, 70.42, 298.30°)
OKLab	oklab(40.87% -0.004 -0.1794)
OKLCH	oklch(40.87% 0.179 268.7)
XYZ	xyz(9.3850, 6.1831, 38.2273)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2539A9 #A99525

analogous

#257BA9 #2539A9 #5325A9

triadic

#2539A9 #A92539 #39A925

tetradic

#2539A9 #A9257B #A99525 #25A953

square

#2539A9 #A9257B #A99525 #25A953

split-complementary

#2539A9 #A95325 #7BA925

monochromatic

#0F1745 #1A2877 #2539A9 #384FD3 #6A7CDE

Accessibility & contrast

On white

9.39

#2539A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2539A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2539A9

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2539A9	#FFFFFF	#000000	##FFFFFF
##2539A9	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAD

Deuteranopia (green-blind)

#0040A7

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2539a9;
/* rgb */ color: rgb(37, 57, 169);
/* oklch */ color: oklch(40.9% 0.179 268.7);

Tailwind

colors: {
  custom: {
    50: '#766fc4',
    500: '#2539a9',
    950: '#000000',
  },
}

SCSS

$custom: #2539a9;
$custom-light: #766fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#2539a9",
  "rgb": {
    "r": 37,
    "g": 57,
    "b": 169
  },
  "hsl": {
    "h": 230.909,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40867,
    "c": 0.17949,
    "h": 268.7
  },
  "luminance": 0.06184
}

Semantic roles & 50–950 ramp

primary

#2539A9

secondary

#C4B665

accent

#CE41E7

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2539A9

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

Preview Lab → · Contrast checker → · Palette generator →