#253B63#253B63

#253B63 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.075 H 261.5°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#253B63
RGB	rgb(37, 59, 99)
HSL	hsl(219, 46%, 27%)
HSV	hsv(219, 63%, 39%)
CMYK	cmyk(62.6%, 40.4%, 0%, 61.2%)
CIE-LAB	lab(25.02, 5.12, -26.26)
CIE-LCH	lch(25.02, 26.75, 281.03°)
OKLab	oklab(35.52% -0.0111 -0.0745)
OKLCH	oklch(35.52% 0.075 261.5)
XYZ	xyz(4.5783, 4.4217, 12.4142)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253B63 #634D25

analogous

#255A63 #253B63 #2E2563

triadic

#253B63 #63253B #3B6325

tetradic

#253B63 #63255A #634D25 #25632E

square

#253B63 #63255A #634D25 #25632E

split-complementary

#253B63 #632E25 #5A6325

monochromatic

#080D16 #142036 #253B63 #365690 #4871BB

Accessibility & contrast

On white

11.14

#253B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#253B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253B63

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253B63	#FFFFFF	#000000	##FFFFFF
##253B63	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3E65

Deuteranopia (green-blind)

#223962

Tritanopia (blue-blind)

#00444A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #253b63;
/* rgb */ color: rgb(37, 59, 99);
/* oklch */ color: oklch(35.5% 0.075 261.5);

Tailwind

colors: {
  custom: {
    50: '#65708f',
    500: '#253b63',
    950: '#000000',
  },
}

SCSS

$custom: #253b63;
$custom-light: #65708f;
$custom-dark: #000000;

JSON

{
  "hex": "#253b63",
  "rgb": {
    "r": 37,
    "g": 59,
    "b": 99
  },
  "hsl": {
    "h": 218.71,
    "s": 45.588,
    "l": 26.667
  },
  "oklch": {
    "l": 0.35519,
    "c": 0.07528,
    "h": 261.5
  },
  "luminance": 0.04422
}

Semantic roles & 50–950 ramp

primary

#253B63

secondary

#967C4E

accent

#A753D5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #253B63

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

Preview Lab → · Contrast checker → · Palette generator →