#263F51#263F51

#263F51 is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.6% C 0.044 H 240.9°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#263F51
RGB	rgb(38, 63, 81)
HSL	hsl(205, 36%, 23%)
HSV	hsv(205, 53%, 32%)
CMYK	cmyk(53.1%, 22.2%, 0%, 68.2%)
CIE-LAB	lab(25.45, -3.84, -13.85)
CIE-LCH	lch(25.45, 14.37, 254.51°)
OKLab	oklab(35.56% -0.0214 -0.0385)
OKLCH	oklch(35.56% 0.044 240.9)
XYZ	xyz(4.0615, 4.5609, 8.4493)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263F51 #513826

analogous

#26514D #263F51 #262951

triadic

#263F51 #51263F #3F5126

tetradic

#263F51 #4D2651 #513826 #295126

square

#263F51 #4D2651 #513826 #295126

split-complementary

#263F51 #512629 #514D26

monochromatic

#0A1015 #121F27 #263F51 #3A5F7B #4D80A4

Accessibility & contrast

On white

10.98

#263F51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#263F51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263F51

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263F51	#FFFFFF	#000000	##FFFFFF
##263F51	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373F52

Deuteranopia (green-blind)

#313A51

Tritanopia (blue-blind)

#114345

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #263f51;
/* rgb */ color: rgb(38, 63, 81);
/* oklch */ color: oklch(35.6% 0.044 240.9);

Tailwind

colors: {
  custom: {
    50: '#637482',
    500: '#263f51',
    950: '#000000',
  },
}

SCSS

$custom: #263f51;
$custom-light: #637482;
$custom-dark: #000000;

JSON

{
  "hex": "#263f51",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 81
  },
  "hsl": {
    "h": 205.116,
    "s": 36.134,
    "l": 23.333
  },
  "oklch": {
    "l": 0.35559,
    "c": 0.04409,
    "h": 240.9
  },
  "luminance": 0.04561
}

Semantic roles & 50–950 ramp

primary

#263F51

secondary

#84654F

accent

#8B5CCC

background

#F6F7F7

surface

#EBEDEE

border

#C6C8C9

text

#05080A

muted

#7A7B7C

Preview Lab

Preview with #263F51

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

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