#263F5B#263F5B

#263F5B is a dark, muted cyan. Relative luminance 0.047; OKLCH L 36.1% C 0.058 H 252.2°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#263F5B
RGB	rgb(38, 63, 91)
HSL	hsl(212, 41%, 25%)
HSV	hsv(212, 58%, 36%)
CMYK	cmyk(58.2%, 30.8%, 0%, 64.3%)
CIE-LAB	lab(25.93, -0.32, -19.63)
CIE-LCH	lch(25.93, 19.64, 269.07°)
OKLab	oklab(36.1% -0.0177 -0.0551)
OKLCH	oklch(36.1% 0.058 252.2)
XYZ	xyz(4.4645, 4.7221, 10.5717)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263F5B #5B4226

analogous

#26595B #263F5B #27265B

triadic

#263F5B #5B263F #3F5B26

tetradic

#263F5B #5B2659 #5B4226 #265B27

square

#263F5B #5B2659 #5B4226 #265B27

split-complementary

#263F5B #5B2726 #595B26

monochromatic

#090F16 #142130 #263F5B #385D86 #4A7BB1

Accessibility & contrast

On white

10.80

#263F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#263F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263F5B

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263F5B	#FFFFFF	#000000	##FFFFFF
##263F5B	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34405C

Deuteranopia (green-blind)

#2D3B5A

Tritanopia (blue-blind)

#064549

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #263f5b;
/* rgb */ color: rgb(38, 63, 91);
/* oklch */ color: oklch(36.1% 0.058 252.2);

Tailwind

colors: {
  custom: {
    50: '#657389',
    500: '#263f5b',
    950: '#000000',
  },
}

SCSS

$custom: #263f5b;
$custom-light: #657389;
$custom-dark: #000000;

JSON

{
  "hex": "#263f5b",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 91
  },
  "hsl": {
    "h": 211.698,
    "s": 41.085,
    "l": 25.294
  },
  "oklch": {
    "l": 0.36099,
    "c": 0.0579,
    "h": 252.2
  },
  "luminance": 0.04722
}

Semantic roles & 50–950 ramp

primary

#263F5B

secondary

#8E704F

accent

#9757D1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06080B

muted

#7A7B7C

Preview Lab

Preview with #263F5B

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

Preview Lab → · Contrast checker → · Palette generator →