#253F6E#253F6E

#253F6E is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.2% C 0.087 H 261.3°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#253F6E
RGB	rgb(37, 63, 110)
HSL	hsl(219, 50%, 29%)
HSV	hsv(219, 66%, 43%)
CMYK	cmyk(66.4%, 42.7%, 0%, 56.9%)
CIE-LAB	lab(26.94, 6.57, -30.27)
CIE-LCH	lch(26.94, 30.97, 282.24°)
OKLab	oklab(37.23% -0.0131 -0.0861)
OKLCH	oklch(37.23% 0.087 261.3)
XYZ	xyz(5.3539, 5.0736, 15.4460)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F6E #6E5425

analogous

#25646E #253F6E #30256E

triadic

#253F6E #6E253F #3F6E25

tetradic

#253F6E #6E2564 #6E5425 #256E30

square

#253F6E #6E2564 #6E5425 #256E30

split-complementary

#253F6E #6E3025 #646E25

monochromatic

#080D17 #162540 #253F6E #34599C #4B76C2

Accessibility & contrast

On white

10.42

#253F6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#253F6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F6E

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F6E	#FFFFFF	#000000	##FFFFFF
##253F6E	1.00	10.42	2.01	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4370

Deuteranopia (green-blind)

#1F3D6D

Tritanopia (blue-blind)

#004A51

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #253f6e;
/* rgb */ color: rgb(37, 63, 110);
/* oklch */ color: oklch(37.2% 0.087 261.3);

Tailwind

colors: {
  custom: {
    50: '#677398',
    500: '#253f6e',
    950: '#000000',
  },
}

SCSS

$custom: #253f6e;
$custom-light: #677398;
$custom-dark: #000000;

JSON

{
  "hex": "#253f6e",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 110
  },
  "hsl": {
    "h": 218.63,
    "s": 49.66,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37225,
    "c": 0.08715,
    "h": 261.3
  },
  "luminance": 0.05074
}

Semantic roles & 50–950 ramp

primary

#253F6E

secondary

#A1834E

accent

#A84FD9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #253F6E

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

Preview Lab → · Contrast checker → · Palette generator →