#253FA6#253FA6

#253FA6 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.168 H 267.4°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#253FA6
RGB	rgb(37, 63, 166)
HSL	hsl(228, 64%, 40%)
HSV	hsv(228, 78%, 65%)
CMYK	cmyk(77.7%, 62%, 0%, 34.9%)
CIE-LAB	lab(31.11, 28.31, -58.16)
CIE-LCH	lch(31.11, 64.69, 295.96°)
OKLab	oklab(41.7% -0.0075 -0.1681)
OKLCH	oklch(41.7% 0.168 267.4)
XYZ	xyz(9.4210, 6.7004, 36.8658)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253FA6 #A68C25

analogous

#2580A6 #253FA6 #4C25A6

triadic

#253FA6 #A6253F #3FA625

tetradic

#253FA6 #A62580 #A68C25 #25A64C

square

#253FA6 #A62580 #A68C25 #25A64C

split-complementary

#253FA6 #A64C25 #80A625

monochromatic

#0F1942 #1A2C74 #253FA6 #3655D2 #6880DD

Accessibility & contrast

On white

8.97

#253FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#253FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253FA6

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253FA6	#FFFFFF	#000000	##FFFFFF
##253FA6	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA9

Deuteranopia (green-blind)

#0043A4

Tritanopia (blue-blind)

#005A6C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #253fa6;
/* rgb */ color: rgb(37, 63, 166);
/* oklch */ color: oklch(41.7% 0.168 267.4);

Tailwind

colors: {
  custom: {
    50: '#7473c1',
    500: '#253fa6',
    950: '#000000',
  },
}

SCSS

$custom: #253fa6;
$custom-light: #7473c1;
$custom-dark: #000000;

JSON

{
  "hex": "#253fa6",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 166
  },
  "hsl": {
    "h": 227.907,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41702,
    "c": 0.16831,
    "h": 267.4
  },
  "luminance": 0.06702
}

Semantic roles & 50–950 ramp

primary

#253FA6

secondary

#C3B064

accent

#C541E7

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #253FA6

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

Preview Lab → · Contrast checker → · Palette generator →