#255CAF#255CAF

#255CAF is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.5% C 0.145 H 258.8°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#255CAF
RGB	rgb(37, 92, 175)
HSL	hsl(216, 65%, 42%)
HSV	hsv(216, 79%, 69%)
CMYK	cmyk(78.9%, 47.4%, 0%, 31.4%)
CIE-LAB	lab(39.82, 12.49, -49.41)
CIE-LCH	lch(39.82, 50.96, 284.18°)
OKLab	oklab(48.5% -0.0282 -0.1419)
OKLCH	oklch(48.5% 0.145 258.8)
XYZ	xyz(12.3251, 11.1413, 42.0500)
Luminance	0.1114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255CAF #AF7825

analogous

#25A1AF #255CAF #3325AF

triadic

#255CAF #AF255C #5CAF25

tetradic

#255CAF #AF25A1 #AF7825 #25AF33

square

#255CAF #AF25A1 #AF7825 #25AF33

split-complementary

#255CAF #AF3325 #A1AF25

monochromatic

#10274A #1A417C #255CAF #3C79D6 #6E9CE0

Accessibility & contrast

On white

6.50

#255CAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#255CAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255CAF

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255CAF	#FFFFFF	#000000	##FFFFFF
##255CAF	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E65B2

Deuteranopia (green-blind)

#0458AD

Tritanopia (blue-blind)

#00707D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #255caf;
/* rgb */ color: rgb(37, 92, 175);
/* oklch */ color: oklch(48.5% 0.145 258.8);

Tailwind

colors: {
  custom: {
    50: '#7589c7',
    500: '#255caf',
    950: '#000000',
  },
}

SCSS

$custom: #255caf;
$custom-light: #7589c7;
$custom-dark: #000000;

JSON

{
  "hex": "#255caf",
  "rgb": {
    "r": 37,
    "g": 92,
    "b": 175
  },
  "hsl": {
    "h": 216.087,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.48503,
    "c": 0.14467,
    "h": 258.8
  },
  "luminance": 0.11143
}

Semantic roles & 50–950 ramp

primary

#255CAF

secondary

#C7A169

accent

#A540E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #255CAF

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

Preview Lab → · Contrast checker → · Palette generator →