#253CA5#253CA5

#253CA5 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.171 H 268.1°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#253CA5
RGB	rgb(37, 60, 165)
HSL	hsl(229, 63%, 40%)
HSV	hsv(229, 78%, 65%)
CMYK	cmyk(77.6%, 63.6%, 0%, 35.3%)
CIE-LAB	lab(30.26, 29.93, -58.97)
CIE-LCH	lch(30.26, 66.13, 296.91°)
OKLab	oklab(41.04% -0.0056 -0.1705)
OKLCH	oklch(41.04% 0.171 268.1)
XYZ	xyz(9.1680, 6.3406, 36.3307)
Luminance	0.0634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253CA5 #A58E25

analogous

#257CA5 #253CA5 #4E25A5

triadic

#253CA5 #A5253C #3CA525

tetradic

#253CA5 #A5257C #A58E25 #25A54E

square

#253CA5 #A5257C #A58E25 #25A54E

split-complementary

#253CA5 #A54E25 #7CA525

monochromatic

#0F1841 #1A2A73 #253CA5 #3552D2 #677DDD

Accessibility & contrast

On white

9.26

#253CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#253CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253CA5

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253CA5	#FFFFFF	#000000	##FFFFFF
##253CA5	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA8

Deuteranopia (green-blind)

#0041A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #253ca5;
/* rgb */ color: rgb(37, 60, 165);
/* oklch */ color: oklch(41.0% 0.171 268.1);

Tailwind

colors: {
  custom: {
    50: '#7471c1',
    500: '#253ca5',
    950: '#000000',
  },
}

SCSS

$custom: #253ca5;
$custom-light: #7471c1;
$custom-dark: #000000;

JSON

{
  "hex": "#253ca5",
  "rgb": {
    "r": 37,
    "g": 60,
    "b": 165
  },
  "hsl": {
    "h": 229.219,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.4104,
    "c": 0.17062,
    "h": 268.1
  },
  "luminance": 0.06342
}

Semantic roles & 50–950 ramp

primary

#253CA5

secondary

#C3B263

accent

#C941E6

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #253CA5

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

Preview Lab → · Contrast checker → · Palette generator →