#253F64#253F64

#253F64 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.6% C 0.072 H 257.3°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#253F64
RGB	rgb(37, 63, 100)
HSL	hsl(215, 46%, 27%)
HSV	hsv(215, 63%, 39%)
CMYK	cmyk(63%, 37%, 0%, 60.8%)
CIE-LAB	lab(26.36, 2.76, -24.79)
CIE-LCH	lch(26.36, 24.94, 276.35°)
OKLab	oklab(36.58% -0.0158 -0.0701)
OKLCH	oklch(36.58% 0.072 257.3)
XYZ	xyz(4.8399, 4.8680, 12.7387)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F64 #644A25

analogous

#255F64 #253F64 #2B2564

triadic

#253F64 #64253F #3F6425

tetradic

#253F64 #64255F #644A25 #25642B

square

#253F64 #64255F #644A25 #25642B

split-complementary

#253F64 #642B25 #5F6425

monochromatic

#080E16 #142337 #253F64 #365B91 #4878BB

Accessibility & contrast

On white

10.64

#253F64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#253F64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F64

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F64	#FFFFFF	#000000	##FFFFFF
##253F64	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304266

Deuteranopia (green-blind)

#273C63

Tritanopia (blue-blind)

#00474C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #253f64;
/* rgb */ color: rgb(37, 63, 100);
/* oklch */ color: oklch(36.6% 0.072 257.3);

Tailwind

colors: {
  custom: {
    50: '#667390',
    500: '#253f64',
    950: '#000000',
  },
}

SCSS

$custom: #253f64;
$custom-light: #667390;
$custom-dark: #000000;

JSON

{
  "hex": "#253f64",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 100
  },
  "hsl": {
    "h": 215.238,
    "s": 45.985,
    "l": 26.863
  },
  "oklch": {
    "l": 0.36577,
    "c": 0.07189,
    "h": 257.3
  },
  "luminance": 0.04868
}

Semantic roles & 50–950 ramp

primary

#253F64

secondary

#97794E

accent

#9F52D6

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #253F64

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

Preview Lab → · Contrast checker → · Palette generator →