#253D9B#253D9B

#253D9B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.3% C 0.156 H 267.7°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#253D9B
RGB	rgb(37, 61, 155)
HSL	hsl(228, 61%, 38%)
HSV	hsv(228, 76%, 61%)
CMYK	cmyk(76.1%, 60.6%, 0%, 39.2%)
CIE-LAB	lab(29.65, 25.45, -53.90)
CIE-LCH	lch(29.65, 59.60, 295.28°)
OKLab	oklab(40.33% -0.0062 -0.1556)
OKLCH	oklch(40.33% 0.156 267.7)
XYZ	xyz(8.3460, 6.0965, 31.7409)
Luminance	0.0610 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D9B #9B8325

analogous

#25789B #253D9B #48259B

triadic

#253D9B #9B253D #3D9B25

tetradic

#253D9B #9B2578 #9B8325 #259B48

square

#253D9B #9B2578 #9B8325 #259B48

split-complementary

#253D9B #9B4825 #789B25

monochromatic

#0D1638 #192A6A #253D9B #3150CC #617AD9

Accessibility & contrast

On white

9.46

#253D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#253D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D9B

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D9B	#FFFFFF	#000000	##FFFFFF
##253D9B	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #253d9b;
/* rgb */ color: rgb(37, 61, 155);
/* oklch */ color: oklch(40.3% 0.156 267.7);

Tailwind

colors: {
  custom: {
    50: '#7272b9',
    500: '#253d9b',
    950: '#000000',
  },
}

SCSS

$custom: #253d9b;
$custom-light: #7272b9;
$custom-dark: #000000;

JSON

{
  "hex": "#253d9b",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 155
  },
  "hsl": {
    "h": 227.797,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40327,
    "c": 0.15577,
    "h": 267.7
  },
  "luminance": 0.06097
}

Semantic roles & 50–950 ramp

primary

#253D9B

secondary

#BFAB5D

accent

#C443E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #253D9B

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

Preview Lab → · Contrast checker → · Palette generator →