#10283F#10283F

#10283F is a dark, muted cyan. Relative luminance 0.020; OKLCH L 27.0% C 0.053 H 249.5°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#10283F
RGB	rgb(16, 40, 63)
HSL	hsl(209, 59%, 15%)
HSV	hsv(209, 75%, 25%)
CMYK	cmyk(74.6%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(15.42, -0.45, -17.39)
CIE-LCH	lch(15.42, 17.40, 268.52°)
OKLab	oklab(27.03% -0.0184 -0.0492)
OKLCH	oklch(27.03% 0.053 249.5)
XYZ	xyz(1.8693, 1.9864, 4.9866)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10283F #3F2710

analogous

#103F3E #10283F #10103F

triadic

#10283F #3F1028 #283F10

tetradic

#10283F #3E103F #3F2710 #103F10

square

#10283F #3E103F #3F2710 #103F10

split-complementary

#10283F #3F1010 #3F3E10

monochromatic

#060F18 #060F18 #10283F #1C4770 #2966A1

Accessibility & contrast

On white

15.03

#10283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#10283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10283F

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10283F	#FFFFFF	#000000	##FFFFFF
##10283F	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E2940

Deuteranopia (green-blind)

#17253F

Tritanopia (blue-blind)

#002D30

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #10283f;
/* rgb */ color: rgb(16, 40, 63);
/* oklch */ color: oklch(27.0% 0.053 249.5);

Tailwind

colors: {
  custom: {
    50: '#546174',
    500: '#10283f',
    950: '#000000',
  },
}

SCSS

$custom: #10283f;
$custom-light: #546174;
$custom-dark: #000000;

JSON

{
  "hex": "#10283f",
  "rgb": {
    "r": 16,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 209.362,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.27028,
    "c": 0.05252,
    "h": 249.5
  },
  "luminance": 0.01987
}

Semantic roles & 50–950 ramp

primary

#10283F

secondary

#795532

accent

#9245E3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030508

muted

#78797B

Preview Lab

Preview with #10283F

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

Preview Lab → · Contrast checker → · Palette generator →