#10537E#10537E

#10537E is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.5% C 0.095 H 243.2°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#10537E
RGB	rgb(16, 83, 126)
HSL	hsl(203, 77%, 28%)
HSV	hsv(203, 87%, 49%)
CMYK	cmyk(87.3%, 34.1%, 0%, 50.6%)
CIE-LAB	lab(33.57, -3.36, -29.85)
CIE-LCH	lch(33.57, 30.04, 263.58°)
OKLab	oklab(42.52% -0.0429 -0.0849)
OKLCH	oklch(42.52% 0.095 243.2)
XYZ	xyz(7.0714, 7.8021, 20.8679)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10537E #7E3B10

analogous

#107E72 #10537E #101C7E

triadic

#10537E #7E1053 #537E10

tetradic

#10537E #72107E #7E3B10 #1C7E10

square

#10537E #72107E #7E3B10 #1C7E10

split-complementary

#10537E #7E101C #7E7210

monochromatic

#03121B #092F48 #10537E #1777B4 #2599E3

Accessibility & contrast

On white

8.20

#10537E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#10537E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10537E

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10537E	#FFFFFF	#000000	##FFFFFF
##10537E	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5480

Deuteranopia (green-blind)

#2F4B7D

Tritanopia (blue-blind)

#005E62

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #10537e;
/* rgb */ color: rgb(16, 83, 126);
/* oklch */ color: oklch(42.5% 0.095 243.2);

Tailwind

colors: {
  custom: {
    50: '#6483a3',
    500: '#10537e',
    950: '#000000',
  },
}

SCSS

$custom: #10537e;
$custom-light: #6483a3;
$custom-dark: #000000;

JSON

{
  "hex": "#10537e",
  "rgb": {
    "r": 16,
    "g": 83,
    "b": 126
  },
  "hsl": {
    "h": 203.455,
    "s": 77.465,
    "l": 27.843
  },
  "oklch": {
    "l": 0.42518,
    "c": 0.09508,
    "h": 243.2
  },
  "luminance": 0.07803
}

Semantic roles & 50–950 ramp

primary

#10537E

secondary

#B46736

accent

#7F34F4

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#060A0F

muted

#7A7C7F

Preview Lab

Preview with #10537E

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

Preview Lab → · Contrast checker → · Palette generator →