#253DB2#253DB2

#253DB2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.187 H 267.9°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#253DB2
RGB	rgb(37, 61, 178)
HSL	hsl(230, 66%, 42%)
HSV	hsv(230, 79%, 70%)
CMYK	cmyk(79.2%, 65.7%, 0%, 30.2%)
CIE-LAB	lab(31.68, 34.13, -64.42)
CIE-LCH	lch(31.68, 72.90, 297.92°)
OKLab	oklab(42.45% -0.0067 -0.1865)
OKLCH	oklch(42.45% 0.187 267.9)
XYZ	xyz(10.4648, 6.9440, 42.8996)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253DB2 #B29A25

analogous

#2584B2 #253DB2 #5325B2

triadic

#253DB2 #B2253D #3DB225

tetradic

#253DB2 #B22584 #B29A25 #25B253

square

#253DB2 #B22584 #B29A25 #25B253

split-complementary

#253DB2 #B25325 #84B225

monochromatic

#101A4D #1A2C7F #253DB2 #3D58D7 #7083E1

Accessibility & contrast

On white

8.79

#253DB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#253DB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253DB2

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253DB2	#FFFFFF	#000000	##FFFFFF
##253DB2	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #253db2;
/* rgb */ color: rgb(37, 61, 178);
/* oklch */ color: oklch(42.4% 0.187 267.9);

Tailwind

colors: {
  custom: {
    50: '#7872ca',
    500: '#253db2',
    950: '#000000',
  },
}

SCSS

$custom: #253db2;
$custom-light: #7872ca;
$custom-dark: #000000;

JSON

{
  "hex": "#253db2",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 178
  },
  "hsl": {
    "h": 229.787,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42447,
    "c": 0.18658,
    "h": 267.9
  },
  "luminance": 0.06945
}

Semantic roles & 50–950 ramp

primary

#253DB2

secondary

#C8B86B

accent

#CC3FE9

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #253DB2

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

Preview Lab → · Contrast checker → · Palette generator →