#2542B3#2542B3

#2542B3 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.182 H 267.0°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#2542B3
RGB	rgb(37, 66, 179)
HSL	hsl(228, 66%, 42%)
HSV	hsv(228, 79%, 70%)
CMYK	cmyk(79.3%, 63.1%, 0%, 29.8%)
CIE-LAB	lab(33.01, 31.25, -62.82)
CIE-LCH	lch(33.01, 70.17, 296.45°)
OKLab	oklab(43.46% -0.0095 -0.1818)
OKLCH	oklch(43.46% 0.182 267)
XYZ	xyz(10.8450, 7.5432, 43.5235)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2542B3 #B39625

analogous

#2589B3 #2542B3 #4F25B3

triadic

#2542B3 #B32542 #42B325

tetradic

#2542B3 #B32589 #B39625 #25B34F

square

#2542B3 #B32589 #B39625 #25B34F

split-complementary

#2542B3 #B34F25 #89B325

monochromatic

#101D4E #1B2F80 #2542B3 #3E5DD7 #7188E2

Accessibility & contrast

On white

8.37

#2542B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#2542B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2542B3

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2542B3	#FFFFFF	#000000	##FFFFFF
##2542B3	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#006074

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2542b3;
/* rgb */ color: rgb(37, 66, 179);
/* oklch */ color: oklch(43.5% 0.182 267.0);

Tailwind

colors: {
  custom: {
    50: '#7776cb',
    500: '#2542b3',
    950: '#000000',
  },
}

SCSS

$custom: #2542b3;
$custom-light: #7776cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2542b3",
  "rgb": {
    "r": 37,
    "g": 66,
    "b": 179
  },
  "hsl": {
    "h": 227.746,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.43456,
    "c": 0.18201,
    "h": 267
  },
  "luminance": 0.07544
}

Semantic roles & 50–950 ramp

primary

#2542B3

secondary

#C8B56B

accent

#C63FE9

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2542B3

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

Preview Lab → · Contrast checker → · Palette generator →