#253D7B#253D7B

#253D7B is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.110 H 265.5°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#253D7B
RGB	rgb(37, 61, 123)
HSL	hsl(223, 54%, 31%)
HSV	hsv(223, 70%, 48%)
CMYK	cmyk(69.9%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(27.19, 13.00, -38.11)
CIE-LCH	lch(27.19, 40.27, 288.83°)
OKLab	oklab(37.69% -0.0085 -0.1092)
OKLCH	oklch(37.69% 0.11 265.5)
XYZ	xyz(6.0056, 5.1603, 19.4146)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253D7B #7B6325

analogous

#25687B #253D7B #38257B

triadic

#253D7B #7B253D #3D7B25

tetradic

#253D7B #7B2568 #7B6325 #257B38

square

#253D7B #7B2568 #7B6325 #257B38

split-complementary

#253D7B #7B3825 #687B25

monochromatic

#090E1D #17264C #253D7B #3354AA #5072CA

Accessibility & contrast

On white

10.33

#253D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#253D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253D7B

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253D7B	#FFFFFF	#000000	##FFFFFF
##253D7B	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C447D

Deuteranopia (green-blind)

#063D7A

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #253d7b;
/* rgb */ color: rgb(37, 61, 123);
/* oklch */ color: oklch(37.7% 0.110 265.5);

Tailwind

colors: {
  custom: {
    50: '#6a72a2',
    500: '#253d7b',
    950: '#000000',
  },
}

SCSS

$custom: #253d7b;
$custom-light: #6a72a2;
$custom-dark: #000000;

JSON

{
  "hex": "#253d7b",
  "rgb": {
    "r": 37,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 223.256,
    "s": 53.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37688,
    "c": 0.10955,
    "h": 265.5
  },
  "luminance": 0.05161
}

Semantic roles & 50–950 ramp

primary

#253D7B

secondary

#AD934F

accent

#B44BDD

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #253D7B

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

Preview Lab → · Contrast checker → · Palette generator →