#103F57#103F57

#103F57 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.064 H 235.6°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#103F57
RGB	rgb(16, 63, 87)
HSL	hsl(200, 69%, 20%)
HSV	hsv(200, 82%, 34%)
CMYK	cmyk(81.6%, 27.6%, 0%, 65.9%)
CIE-LAB	lab(24.81, -6.26, -18.85)
CIE-LCH	lch(24.81, 19.86, 251.61°)
OKLab	oklab(34.89% -0.0364 -0.0531)
OKLCH	oklch(34.89% 0.064 235.6)
XYZ	xyz(3.7108, 4.3529, 9.6596)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F57 #572810

analogous

#10574C #103F57 #101B57

triadic

#103F57 #57103F #3F5710

tetradic

#103F57 #4C1057 #572810 #1B5710

square

#103F57 #4C1057 #572810 #1B5710

split-complementary

#103F57 #57101B #574C10

monochromatic

#05131A #061A23 #103F57 #1A648B #238ABE

Accessibility & contrast

On white

11.23

#103F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#103F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F57

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F57	#FFFFFF	#000000	##FFFFFF
##103F57	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333F58

Deuteranopia (green-blind)

#2A3857

Tritanopia (blue-blind)

#004547

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #103f57;
/* rgb */ color: rgb(16, 63, 87);
/* oklch */ color: oklch(34.9% 0.064 235.6);

Tailwind

colors: {
  custom: {
    50: '#5a7486',
    500: '#103f57',
    950: '#000000',
  },
}

SCSS

$custom: #103f57;
$custom-light: #5a7486;
$custom-dark: #000000;

JSON

{
  "hex": "#103f57",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 87
  },
  "hsl": {
    "h": 200.282,
    "s": 68.932,
    "l": 20.196
  },
  "oklch": {
    "l": 0.3489,
    "c": 0.06442,
    "h": 235.6
  },
  "luminance": 0.04353
}

Semantic roles & 50–950 ramp

primary

#103F57

secondary

#905232

accent

#773CEC

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #103F57

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

Preview Lab → · Contrast checker → · Palette generator →