#1D638D#1D638D

#1D638D is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.8% C 0.095 H 240.1°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D638D
RGB	rgb(29, 99, 141)
HSL	hsl(203, 66%, 33%)
HSV	hsv(203, 79%, 55%)
CMYK	cmyk(79.4%, 29.8%, 0%, 44.7%)
CIE-LAB	lab(39.76, -6.09, -29.24)
CIE-LCH	lch(39.76, 29.87, 258.23°)
OKLab	oklab(47.76% -0.0476 -0.0827)
OKLCH	oklch(47.76% 0.095 240.1)
XYZ	xyz(9.7744, 11.1068, 26.8228)
Luminance	0.1111 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D638D #8D471D

analogous

#1D8D7F #1D638D #1D2B8D

triadic

#1D638D #8D1D63 #638D1D

tetradic

#1D638D #7F1D8D #8D471D #2B8D1D

square

#1D638D #7F1D8D #8D471D #2B8D1D

split-complementary

#1D638D #8D1D2B #8D7F1D

monochromatic

#081C27 #133F5A #1D638D #2787C0 #4BA4DA

Accessibility & contrast

On white

6.52

#1D638D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#1D638D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D638D

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D638D	#FFFFFF	#000000	##FFFFFF
##1D638D	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F638F

Deuteranopia (green-blind)

#40598C

Tritanopia (blue-blind)

#006E72

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1d638d;
/* rgb */ color: rgb(29, 99, 141);
/* oklch */ color: oklch(47.8% 0.095 240.1);

Tailwind

colors: {
  custom: {
    50: '#6b8fae',
    500: '#1d638d',
    950: '#000000',
  },
}

SCSS

$custom: #1d638d;
$custom-light: #6b8fae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d638d",
  "rgb": {
    "r": 29,
    "g": 99,
    "b": 141
  },
  "hsl": {
    "h": 202.5,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.47759,
    "c": 0.09546,
    "h": 240.1
  },
  "luminance": 0.11108
}

Semantic roles & 50–950 ramp

primary

#1D638D

secondary

#BC754A

accent

#7F3FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1D638D

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

Preview Lab → · Contrast checker → · Palette generator →