#253DA4#253DA4

#253DA4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.168 H 267.9°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#253DA4
RGB	rgb(37, 61, 164)
HSL	hsl(229, 63%, 39%)
HSV	hsv(229, 77%, 64%)
CMYK	cmyk(77.4%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(30.42, 28.89, -58.09)
CIE-LCH	lch(30.42, 64.87, 296.44°)
OKLab	oklab(41.14% -0.0062 -0.1679)
OKLCH	oklch(41.14% 0.168 267.9)
XYZ	xyz(9.1302, 6.4101, 35.8708)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253DA4 #A48C25

analogous

#257DA4 #253DA4 #4C25A4

triadic

#253DA4 #A4253D #3DA425

tetradic

#253DA4 #A4257D #A48C25 #25A44C

square

#253DA4 #A4257D #A48C25 #25A44C

split-complementary

#253DA4 #A44C25 #7DA425

monochromatic

#0E1840 #1A2A72 #253DA4 #3552D1 #677DDD

Accessibility & contrast

On white

9.20

#253DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#253DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253DA4

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253DA4	#FFFFFF	#000000	##FFFFFF
##253DA4	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0042A2

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #253da4;
/* rgb */ color: rgb(37, 61, 164);
/* oklch */ color: oklch(41.1% 0.168 267.9);

Tailwind

colors: {
  custom: {
    50: '#7472c0',
    500: '#253da4',
    950: '#000000',
  },
}

SCSS

$custom: #253da4;
$custom-light: #7472c0;
$custom-dark: #000000;

JSON

{
  "hex": "#253da4",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 228.661,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.41137,
    "c": 0.16806,
    "h": 267.9
  },
  "luminance": 0.06411
}

Semantic roles & 50–950 ramp

primary

#253DA4

secondary

#C2B062

accent

#C742E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #253DA4

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

Preview Lab → · Contrast checker → · Palette generator →