#1D638B#1D638B

#1D638B is a mid, moderate cyan. Relative luminance 0.110; OKLCH L 47.6% C 0.093 H 238.8°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#1D638B
RGB	rgb(29, 99, 139)
HSL	hsl(202, 65%, 33%)
HSV	hsv(202, 79%, 55%)
CMYK	cmyk(79.1%, 28.8%, 0%, 45.5%)
CIE-LAB	lab(39.66, -6.85, -28.19)
CIE-LCH	lch(39.66, 29.01, 256.34°)
OKLab	oklab(47.65% -0.0483 -0.0797)
OKLCH	oklch(47.65% 0.093 238.8)
XYZ	xyz(9.6269, 11.0478, 26.0462)
Luminance	0.1105 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D638B #8B451D

analogous

#1D8B7C #1D638B #1D2C8B

triadic

#1D638B #8B1D63 #638B1D

tetradic

#1D638B #7C1D8B #8B451D #2C8B1D

square

#1D638B #7C1D8B #8B451D #2C8B1D

split-complementary

#1D638B #8B1D2C #8B7C1D

monochromatic

#081B26 #123F58 #1D638B #2887BE #49A5D9

Accessibility & contrast

On white

6.54

#1D638B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#1D638B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D638B

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D638B	#FFFFFF	#000000	##FFFFFF
##1D638B	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50638D

Deuteranopia (green-blind)

#41598A

Tritanopia (blue-blind)

#006D71

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1d638b;
/* rgb */ color: rgb(29, 99, 139);
/* oklch */ color: oklch(47.6% 0.093 238.8);

Tailwind

colors: {
  custom: {
    50: '#6b8fad',
    500: '#1d638b',
    950: '#000000',
  },
}

SCSS

$custom: #1d638b;
$custom-light: #6b8fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d638b",
  "rgb": {
    "r": 29,
    "g": 99,
    "b": 139
  },
  "hsl": {
    "h": 201.818,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.47648,
    "c": 0.09318,
    "h": 238.8
  },
  "luminance": 0.11049
}

Semantic roles & 50–950 ramp

primary

#1D638B

secondary

#BB7249

accent

#7D3FE8

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1D638B

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

Preview Lab → · Contrast checker → · Palette generator →