#253DA3#253DA3

#253DA3 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.167 H 267.9°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#253DA3
RGB	rgb(37, 61, 163)
HSL	hsl(229, 63%, 39%)
HSV	hsv(229, 77%, 64%)
CMYK	cmyk(77.3%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(30.34, 28.51, -57.63)
CIE-LCH	lch(30.34, 64.29, 296.32°)
OKLab	oklab(41.05% -0.0062 -0.1666)
OKLCH	oklch(41.05% 0.167 267.9)
XYZ	xyz(9.0403, 6.3741, 35.3971)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253DA3 #A38B25

analogous

#257CA3 #253DA3 #4C25A3

triadic

#253DA3 #A3253D #3DA325

tetradic

#253DA3 #A3257C #A38B25 #25A34C

square

#253DA3 #A3257C #A38B25 #25A34C

split-complementary

#253DA3 #A34C25 #7CA325

monochromatic

#0E183F #1A2A71 #253DA3 #3452D1 #667DDC

Accessibility & contrast

On white

9.23

#253DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#253DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253DA3

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253DA3	#FFFFFF	#000000	##FFFFFF
##253DA3	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA6

Deuteranopia (green-blind)

#0042A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #253da3;
/* rgb */ color: rgb(37, 61, 163);
/* oklch */ color: oklch(41.0% 0.167 267.9);

Tailwind

colors: {
  custom: {
    50: '#7472bf',
    500: '#253da3',
    950: '#000000',
  },
}

SCSS

$custom: #253da3;
$custom-light: #7472bf;
$custom-dark: #000000;

JSON

{
  "hex": "#253da3",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 228.571,
    "s": 63,
    "l": 39.216
  },
  "oklch": {
    "l": 0.41046,
    "c": 0.16671,
    "h": 267.9
  },
  "luminance": 0.06375
}

Semantic roles & 50–950 ramp

primary

#253DA3

secondary

#C2B062

accent

#C742E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #253DA3

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

Preview Lab → · Contrast checker → · Palette generator →