#253A66#253A66

#253A66 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.081 H 263.6°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#253A66
RGB	rgb(37, 58, 102)
HSL	hsl(221, 47%, 27%)
HSV	hsv(221, 64%, 40%)
CMYK	cmyk(63.7%, 43.1%, 0%, 60%)
CIE-LAB	lab(24.88, 6.95, -28.41)
CIE-LCH	lch(24.88, 29.25, 283.75°)
OKLab	oklab(35.47% -0.0091 -0.0808)
OKLCH	oklch(35.47% 0.081 263.6)
XYZ	xyz(4.6735, 4.3783, 13.1666)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253A66 #665125

analogous

#255B66 #253A66 #302566

triadic

#253A66 #66253A #3A6625

tetradic

#253A66 #66255B #665125 #256630

square

#253A66 #66255B #665125 #256630

split-complementary

#253A66 #663025 #5B6625

monochromatic

#080D16 #152039 #253A66 #355493 #496EBD

Accessibility & contrast

On white

11.20

#253A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#253A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253A66

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253A66	#FFFFFF	#000000	##FFFFFF
##253A66	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273E68

Deuteranopia (green-blind)

#1E3865

Tritanopia (blue-blind)

#00444B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #253a66;
/* rgb */ color: rgb(37, 58, 102);
/* oklch */ color: oklch(35.5% 0.081 263.6);

Tailwind

colors: {
  custom: {
    50: '#666f92',
    500: '#253a66',
    950: '#000000',
  },
}

SCSS

$custom: #253a66;
$custom-light: #666f92;
$custom-dark: #000000;

JSON

{
  "hex": "#253a66",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 102
  },
  "hsl": {
    "h": 220.615,
    "s": 46.763,
    "l": 27.255
  },
  "oklch": {
    "l": 0.35474,
    "c": 0.08129,
    "h": 263.6
  },
  "luminance": 0.04379
}

Semantic roles & 50–950 ramp

primary

#253A66

secondary

#99814E

accent

#AB51D6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #253A66

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

Preview Lab → · Contrast checker → · Palette generator →