#253C9F#253C9F

#253C9F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.163 H 268.1°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#253C9F
RGB	rgb(37, 60, 159)
HSL	hsl(229, 62%, 38%)
HSV	hsv(229, 77%, 62%)
CMYK	cmyk(76.7%, 62.3%, 0%, 37.6%)
CIE-LAB	lab(29.73, 27.65, -56.20)
CIE-LCH	lch(29.73, 62.63, 296.20°)
OKLab	oklab(40.49% -0.0055 -0.1624)
OKLCH	oklch(40.49% 0.163 268.1)
XYZ	xyz(8.6346, 6.1273, 33.5218)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253C9F #9F8825

analogous

#25799F #253C9F #4B259F

triadic

#253C9F #9F253C #3C9F25

tetradic

#253C9F #9F2579 #9F8825 #259F4B

square

#253C9F #9F2579 #9F8825 #259F4B

split-complementary

#253C9F #9F4B25 #799F25

monochromatic

#0E173C #19296D #253C9F #3250CF #647ADB

Accessibility & contrast

On white

9.44

#253C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#253C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253C9F

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253C9F	#FFFFFF	#000000	##FFFFFF
##253C9F	1.00	9.44	2.23	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #253c9f;
/* rgb */ color: rgb(37, 60, 159);
/* oklch */ color: oklch(40.5% 0.163 268.1);

Tailwind

colors: {
  custom: {
    50: '#7371bc',
    500: '#253c9f',
    950: '#000000',
  },
}

SCSS

$custom: #253c9f;
$custom-light: #7371bc;
$custom-dark: #000000;

JSON

{
  "hex": "#253c9f",
  "rgb": {
    "r": 37,
    "g": 60,
    "b": 159
  },
  "hsl": {
    "h": 228.689,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.4049,
    "c": 0.16251,
    "h": 268.1
  },
  "luminance": 0.06128
}

Semantic roles & 50–950 ramp

primary

#253C9F

secondary

#C0AE5F

accent

#C742E5

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #253C9F

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

Preview Lab → · Contrast checker → · Palette generator →