#253D9F#253D9F

#253D9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.161 H 267.8°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#253D9F
RGB	rgb(37, 61, 159)
HSL	hsl(228, 62%, 38%)
HSV	hsv(228, 77%, 62%)
CMYK	cmyk(76.7%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(29.99, 26.98, -55.77)
CIE-LCH	lch(29.99, 61.96, 295.82°)
OKLab	oklab(40.68% -0.0062 -0.1611)
OKLCH	oklch(40.68% 0.161 267.8)
XYZ	xyz(8.6875, 6.2330, 33.5394)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D9F #9F8725

analogous

#257A9F #253D9F #4A259F

triadic

#253D9F #9F253D #3D9F25

tetradic

#253D9F #9F257A #9F8725 #259F4A

square

#253D9F #9F257A #9F8725 #259F4A

split-complementary

#253D9F #9F4A25 #7A9F25

monochromatic

#0E173C #192A6D #253D9F #3251CF #647BDB

Accessibility & contrast

On white

9.35

#253D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#253D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D9F

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D9F	#FFFFFF	#000000	##FFFFFF
##253D9F	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #253d9f;
/* rgb */ color: rgb(37, 61, 159);
/* oklch */ color: oklch(40.7% 0.161 267.8);

Tailwind

colors: {
  custom: {
    50: '#7372bc',
    500: '#253d9f',
    950: '#000000',
  },
}

SCSS

$custom: #253d9f;
$custom-light: #7372bc;
$custom-dark: #000000;

JSON

{
  "hex": "#253d9f",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 228.197,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40684,
    "c": 0.16127,
    "h": 267.8
  },
  "luminance": 0.06234
}

Semantic roles & 50–950 ramp

primary

#253D9F

secondary

#C0AD5F

accent

#C542E5

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #253D9F

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

Preview Lab → · Contrast checker → · Palette generator →