#253F6B#253F6B

#253F6B is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.0% C 0.083 H 260.3°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#253F6B
RGB	rgb(37, 63, 107)
HSL	hsl(218, 49%, 28%)
HSV	hsv(218, 65%, 42%)
CMYK	cmyk(65.4%, 41.1%, 0%, 58%)
CIE-LAB	lab(26.76, 5.42, -28.64)
CIE-LCH	lch(26.76, 29.15, 280.71°)
OKLab	oklab(37.03% -0.0139 -0.0814)
OKLCH	oklch(37.03% 0.083 260.3)
XYZ	xyz(5.1934, 5.0094, 14.6003)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F6B #6B5125

analogous

#25626B #253F6B #2E256B

triadic

#253F6B #6B253F #3F6B25

tetradic

#253F6B #6B2562 #6B5125 #256B2E

square

#253F6B #6B2562 #6B5125 #256B2E

split-complementary

#253F6B #6B2E25 #626B25

monochromatic

#080D17 #15243E #253F6B #355A98 #4A76C0

Accessibility & contrast

On white

10.49

#253F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#253F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F6B

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F6B	#FFFFFF	#000000	##FFFFFF
##253F6B	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C436D

Deuteranopia (green-blind)

#223C6A

Tritanopia (blue-blind)

#00494F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #253f6b;
/* rgb */ color: rgb(37, 63, 107);
/* oklch */ color: oklch(37.0% 0.083 260.3);

Tailwind

colors: {
  custom: {
    50: '#677395',
    500: '#253f6b',
    950: '#000000',
  },
}

SCSS

$custom: #253f6b;
$custom-light: #677395;
$custom-dark: #000000;

JSON

{
  "hex": "#253f6b",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 107
  },
  "hsl": {
    "h": 217.714,
    "s": 48.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37025,
    "c": 0.08257,
    "h": 260.3
  },
  "luminance": 0.0501
}

Semantic roles & 50–950 ramp

primary

#253F6B

secondary

#9E804E

accent

#A550D8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #253F6B

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

Preview Lab → · Contrast checker → · Palette generator →