#253BB2#253BB2

#253BB2 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.1% C 0.189 H 268.3°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#253BB2
RGB	rgb(37, 59, 178)
HSL	hsl(231, 66%, 42%)
HSV	hsv(231, 79%, 70%)
CMYK	cmyk(79.2%, 66.9%, 0%, 30.2%)
CIE-LAB	lab(31.19, 35.42, -65.21)
CIE-LCH	lch(31.19, 74.21, 298.51°)
OKLab	oklab(42.09% -0.0056 -0.1888)
OKLCH	oklch(42.09% 0.189 268.3)
XYZ	xyz(10.3600, 6.7344, 42.8647)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253BB2 #B29C25

analogous

#2582B2 #253BB2 #5525B2

triadic

#253BB2 #B2253B #3BB225

tetradic

#253BB2 #B22582 #B29C25 #25B255

square

#253BB2 #B22582 #B29C25 #25B255

split-complementary

#253BB2 #B25525 #82B225

monochromatic

#10194D #1A2A7F #253BB2 #3D55D7 #7082E1

Accessibility & contrast

On white

8.95

#253BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#253BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253BB2

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253BB2	#FFFFFF	#000000	##FFFFFF
##253BB2	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0043B0

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #253bb2;
/* rgb */ color: rgb(37, 59, 178);
/* oklch */ color: oklch(42.1% 0.189 268.3);

Tailwind

colors: {
  custom: {
    50: '#7871ca',
    500: '#253bb2',
    950: '#000000',
  },
}

SCSS

$custom: #253bb2;
$custom-light: #7871ca;
$custom-dark: #000000;

JSON

{
  "hex": "#253bb2",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 178
  },
  "hsl": {
    "h": 230.638,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42092,
    "c": 0.18888,
    "h": 268.3
  },
  "luminance": 0.06736
}

Semantic roles & 50–950 ramp

primary

#253BB2

secondary

#C8B96B

accent

#CE3FE9

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #253BB2

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

Preview Lab → · Contrast checker → · Palette generator →