#253B71#253B71

#253B71 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.097 H 265.2°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#253B71
RGB	rgb(37, 59, 113)
HSL	hsl(223, 51%, 29%)
HSV	hsv(223, 67%, 44%)
CMYK	cmyk(67.3%, 47.8%, 0%, 55.7%)
CIE-LAB	lab(25.90, 10.49, -33.84)
CIE-LCH	lch(25.90, 35.43, 287.22°)
OKLab	oklab(36.49% -0.008 -0.0967)
OKLCH	oklch(36.49% 0.097 265.2)
XYZ	xyz(5.3065, 4.7130, 16.2496)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B71 #715B25

analogous

#256171 #253B71 #352571

triadic

#253B71 #71253B #3B7125

tetradic

#253B71 #712561 #715B25 #257135

square

#253B71 #712561 #715B25 #257135

split-complementary

#253B71 #713525 #617125

monochromatic

#080C17 #162343 #253B71 #34539F #4C6FC4

Accessibility & contrast

On white

10.81

#253B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#253B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B71

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B71	#FFFFFF	#000000	##FFFFFF
##253B71	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214173

Deuteranopia (green-blind)

#143A70

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #253b71;
/* rgb */ color: rgb(37, 59, 113);
/* oklch */ color: oklch(36.5% 0.097 265.2);

Tailwind

colors: {
  custom: {
    50: '#68709a',
    500: '#253b71',
    950: '#000000',
  },
}

SCSS

$custom: #253b71;
$custom-light: #68709a;
$custom-dark: #000000;

JSON

{
  "hex": "#253b71",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 113
  },
  "hsl": {
    "h": 222.632,
    "s": 50.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36485,
    "c": 0.09704,
    "h": 265.2
  },
  "luminance": 0.04713
}

Semantic roles & 50–950 ramp

primary

#253B71

secondary

#A48B4E

accent

#B14EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #253B71

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

Preview Lab → · Contrast checker → · Palette generator →