#1C638B#1C638B

#1C638B is a mid, moderate cyan. Relative luminance 0.110; OKLCH L 47.6% C 0.094 H 238.6°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#1C638B
RGB	rgb(28, 99, 139)
HSL	hsl(202, 66%, 33%)
HSV	hsv(202, 80%, 55%)
CMYK	cmyk(79.9%, 28.8%, 0%, 45.5%)
CIE-LAB	lab(39.64, -6.97, -28.23)
CIE-LCH	lch(39.64, 29.07, 256.13°)
OKLab	oklab(47.62% -0.0488 -0.0798)
OKLCH	oklch(47.62% 0.094 238.6)
XYZ	xyz(9.5991, 11.0335, 26.0449)
Luminance	0.1104 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C638B #8B441C

analogous

#1C8B7C #1C638B #1C2B8B

triadic

#1C638B #8B1C63 #638B1C

tetradic

#1C638B #7C1C8B #8B441C #2B8B1C

square

#1C638B #7C1C8B #8B441C #2B8B1C

split-complementary

#1C638B #8B1C2B #8B7C1C

monochromatic

#071A25 #123F58 #1C638B #2687BE #47A5DA

Accessibility & contrast

On white

6.55

#1C638B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#1C638B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C638B

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C638B	#FFFFFF	#000000	##FFFFFF
##1C638B	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	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: #1c638b;
/* rgb */ color: rgb(28, 99, 139);
/* oklch */ color: oklch(47.6% 0.094 238.6);

Tailwind

colors: {
  custom: {
    50: '#6a8fad',
    500: '#1c638b',
    950: '#000000',
  },
}

SCSS

$custom: #1c638b;
$custom-light: #6a8fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c638b",
  "rgb": {
    "r": 28,
    "g": 99,
    "b": 139
  },
  "hsl": {
    "h": 201.622,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.47622,
    "c": 0.09354,
    "h": 238.6
  },
  "luminance": 0.11035
}

Semantic roles & 50–950 ramp

primary

#1C638B

secondary

#BC7147

accent

#7C3EE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1C638B

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

Preview Lab → · Contrast checker → · Palette generator →