#253A8F#253A8F

#253A8F is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.143 H 268.3°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#253A8F
RGB	rgb(37, 58, 143)
HSL	hsl(228, 59%, 35%)
HSV	hsv(228, 74%, 56%)
CMYK	cmyk(74.1%, 59.4%, 0%, 43.9%)
CIE-LAB	lab(27.85, 22.87, -49.49)
CIE-LCH	lch(27.85, 54.52, 294.80°)
OKLab	oklab(38.67% -0.0042 -0.1427)
OKLCH	oklch(38.67% 0.143 268.3)
XYZ	xyz(7.2322, 5.4018, 26.6428)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253A8F #8F7A25

analogous

#256F8F #253A8F #45258F

triadic

#253A8F #8F253A #3A8F25

tetradic

#253A8F #8F256F #8F7A25 #258F45

square

#253A8F #8F256F #8F7A25 #258F45

split-complementary

#253A8F #8F4525 #6F8F25

monochromatic

#0C132E #18265E #253A8F #324EC0 #5A72D4

Accessibility & contrast

On white

10.09

#253A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#253A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253A8F

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253A8F	#FFFFFF	#000000	##FFFFFF
##253A8F	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #253a8f;
/* rgb */ color: rgb(37, 58, 143);
/* oklch */ color: oklch(38.7% 0.143 268.3);

Tailwind

colors: {
  custom: {
    50: '#6f6fb0',
    500: '#253a8f',
    950: '#000000',
  },
}

SCSS

$custom: #253a8f;
$custom-light: #6f6fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#253a8f",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 143
  },
  "hsl": {
    "h": 228.113,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.3867,
    "c": 0.14281,
    "h": 268.3
  },
  "luminance": 0.05403
}

Semantic roles & 50–950 ramp

primary

#253A8F

secondary

#B9A657

accent

#C346E2

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #253A8F

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

Preview Lab → · Contrast checker → · Palette generator →