#1B638D#1B638D

#1B638D is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.7% C 0.096 H 239.7°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B638D
RGB	rgb(27, 99, 141)
HSL	hsl(202, 68%, 33%)
HSV	hsv(202, 81%, 55%)
CMYK	cmyk(80.9%, 29.8%, 0%, 44.7%)
CIE-LAB	lab(39.71, -6.32, -29.32)
CIE-LCH	lch(39.71, 29.99, 257.83°)
OKLab	oklab(47.71% -0.0486 -0.083)
OKLCH	oklch(47.71% 0.096 239.7)
XYZ	xyz(9.7197, 11.0786, 26.8203)
Luminance	0.1108 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B638D #8D451B

analogous

#1B8D7E #1B638D #1B2A8D

triadic

#1B638D #8D1B63 #638D1B

tetradic

#1B638D #7E1B8D #8D451B #2A8D1B

square

#1B638D #7E1B8D #8D451B #2A8D1B

split-complementary

#1B638D #8D1B2A #8D7E1B

monochromatic

#071B26 #113F5A #1B638D #2587C0 #47A5DC

Accessibility & contrast

On white

6.53

#1B638D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#1B638D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B638D

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B638D	#FFFFFF	#000000	##FFFFFF
##1B638D	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	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: #1b638d;
/* rgb */ color: rgb(27, 99, 141);
/* oklch */ color: oklch(47.7% 0.096 239.7);

Tailwind

colors: {
  custom: {
    50: '#6b8fae',
    500: '#1b638d',
    950: '#000000',
  },
}

SCSS

$custom: #1b638d;
$custom-light: #6b8fae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b638d",
  "rgb": {
    "r": 27,
    "g": 99,
    "b": 141
  },
  "hsl": {
    "h": 202.105,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.47708,
    "c": 0.09614,
    "h": 239.7
  },
  "luminance": 0.1108
}

Semantic roles & 50–950 ramp

primary

#1B638D

secondary

#BD7246

accent

#7D3DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B638D

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

Preview Lab → · Contrast checker → · Palette generator →