#253A5B#253A5B

#253A5B is a dark, moderate blue. Relative luminance 0.042; OKLCH L 34.8% C 0.064 H 259.1°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#253A5B
RGB	rgb(37, 58, 91)
HSL	hsl(217, 42%, 25%)
HSV	hsv(217, 59%, 36%)
CMYK	cmyk(59.3%, 36.3%, 0%, 64.3%)
CIE-LAB	lab(24.24, 2.81, -22.28)
CIE-LCH	lch(24.24, 22.46, 277.19°)
OKLab	oklab(34.76% -0.0121 -0.0629)
OKLCH	oklch(34.76% 0.064 259.1)
XYZ	xyz(4.1637, 4.1744, 10.4818)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253A5B #5B4625

analogous

#25555B #253A5B #2B255B

triadic

#253A5B #5B253A #3A5B25

tetradic

#253A5B #5B2555 #5B4625 #255B2B

square

#253A5B #5B2555 #5B4625 #255B2B

split-complementary

#253A5B #5B2B25 #555B25

monochromatic

#090E16 #131E2F #253A5B #375687 #4871B2

Accessibility & contrast

On white

11.44

#253A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#253A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253A5B

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253A5B	#FFFFFF	#000000	##FFFFFF
##253A5B	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3C5C

Deuteranopia (green-blind)

#26375A

Tritanopia (blue-blind)

#044146

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #253a5b;
/* rgb */ color: rgb(37, 58, 91);
/* oklch */ color: oklch(34.8% 0.064 259.1);

Tailwind

colors: {
  custom: {
    50: '#646f89',
    500: '#253a5b',
    950: '#000000',
  },
}

SCSS

$custom: #253a5b;
$custom-light: #646f89;
$custom-dark: #000000;

JSON

{
  "hex": "#253a5b",
  "rgb": {
    "r": 37,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 216.667,
    "s": 42.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34763,
    "c": 0.06403,
    "h": 259.1
  },
  "luminance": 0.04175
}

Semantic roles & 50–950 ramp

primary

#253A5B

secondary

#8E754D

accent

#A256D2

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070B

muted

#7A7A7C

Preview Lab

Preview with #253A5B

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

Preview Lab → · Contrast checker → · Palette generator →