#253B8F#253B8F

#253B8F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.142 H 268.0°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#253B8F
RGB	rgb(37, 59, 143)
HSL	hsl(228, 59%, 35%)
HSV	hsv(228, 74%, 56%)
CMYK	cmyk(74.1%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(28.12, 22.18, -49.04)
CIE-LCH	lch(28.12, 53.83, 294.34°)
OKLab	oklab(38.88% -0.005 -0.1414)
OKLCH	oklch(38.88% 0.142 268)
XYZ	xyz(7.2831, 5.5037, 26.6598)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B8F #8F7925

analogous

#25708F #253B8F #44258F

triadic

#253B8F #8F253B #3B8F25

tetradic

#253B8F #8F2570 #8F7925 #258F44

square

#253B8F #8F2570 #8F7925 #258F44

split-complementary

#253B8F #8F4425 #708F25

monochromatic

#0C132E #18275E #253B8F #324FC0 #5A73D4

Accessibility & contrast

On white

10.00

#253B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#253B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B8F

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B8F	#FFFFFF	#000000	##FFFFFF
##253B8F	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003E8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #253b8f;
/* rgb */ color: rgb(37, 59, 143);
/* oklch */ color: oklch(38.9% 0.142 268.0);

Tailwind

colors: {
  custom: {
    50: '#6f70b0',
    500: '#253b8f',
    950: '#000000',
  },
}

SCSS

$custom: #253b8f;
$custom-light: #6f70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#253b8f",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 227.547,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38875,
    "c": 0.14151,
    "h": 268
  },
  "luminance": 0.05504
}

Semantic roles & 50–950 ramp

primary

#253B8F

secondary

#B9A557

accent

#C246E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #253B8F

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

Preview Lab → · Contrast checker → · Palette generator →