#253F6F#253F6F

#253F6F is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.3% C 0.089 H 261.6°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#253F6F
RGB	rgb(37, 63, 111)
HSL	hsl(219, 50%, 29%)
HSV	hsv(219, 67%, 44%)
CMYK	cmyk(66.7%, 43.2%, 0%, 56.5%)
CIE-LAB	lab(27.01, 6.95, -30.81)
CIE-LCH	lch(27.01, 31.58, 282.72°)
OKLab	oklab(37.29% -0.0129 -0.0877)
OKLCH	oklch(37.29% 0.089 261.6)
XYZ	xyz(5.4087, 5.0955, 15.7343)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#253F6F #6F5525

analogous

#25646F #253F6F #30256F

triadic

#253F6F #6F253F #3F6F25

tetradic

#253F6F #6F2564 #6F5525 #256F30

square

#253F6F #6F2564 #6F5525 #256F30

split-complementary

#253F6F #6F3025 #646F25

monochromatic

#080D17 #162541 #253F6F #34599D #4B75C3

Accessibility & contrast

On white

10.40

#253F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#253F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #253F6F

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##253F6F	#FFFFFF	#000000	##FFFFFF
##253F6F	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294471

Deuteranopia (green-blind)

#1E3D6E

Tritanopia (blue-blind)

#004A51

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #253f6f;
/* rgb */ color: rgb(37, 63, 111);
/* oklch */ color: oklch(37.3% 0.089 261.6);

Tailwind

colors: {
  custom: {
    50: '#687398',
    500: '#253f6f',
    950: '#000000',
  },
}

SCSS

$custom: #253f6f;
$custom-light: #687398;
$custom-dark: #000000;

JSON

{
  "hex": "#253f6f",
  "rgb": {
    "r": 37,
    "g": 63,
    "b": 111
  },
  "hsl": {
    "h": 218.919,
    "s": 50,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37293,
    "c": 0.08868,
    "h": 261.6
  },
  "luminance": 0.05096
}

Semantic roles & 50–950 ramp

primary

#253F6F

secondary

#A2844E

accent

#A94EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #253F6F

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

Preview Lab → · Contrast checker → · Palette generator →