#1F638D#1F638D

#1F638D is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.8% C 0.095 H 240.5°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#1F638D
RGB	rgb(31, 99, 141)
HSL	hsl(203, 64%, 34%)
HSV	hsv(203, 78%, 55%)
CMYK	cmyk(78%, 29.8%, 0%, 44.7%)
CIE-LAB	lab(39.81, -5.84, -29.16)
CIE-LCH	lch(39.81, 29.73, 258.67°)
OKLab	oklab(47.81% -0.0466 -0.0825)
OKLCH	oklch(47.81% 0.095 240.5)
XYZ	xyz(9.8327, 11.1369, 26.8256)
Luminance	0.1114 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F638D #8D491F

analogous

#1F8D80 #1F638D #1F2C8D

triadic

#1F638D #8D1F63 #638D1F

tetradic

#1F638D #801F8D #8D491F #2C8D1F

square

#1F638D #801F8D #8D491F #2C8D1F

split-complementary

#1F638D #8D1F2C #8D801F

monochromatic

#091D29 #14405B #1F638D #2A86BF #4EA3D8

Accessibility & contrast

On white

6.51

#1F638D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#1F638D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F638D

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F638D	#FFFFFF	#000000	##FFFFFF
##1F638D	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F648F

Deuteranopia (green-blind)

#40598C

Tritanopia (blue-blind)

#006D72

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1f638d;
/* rgb */ color: rgb(31, 99, 141);
/* oklch */ color: oklch(47.8% 0.095 240.5);

Tailwind

colors: {
  custom: {
    50: '#6c8fae',
    500: '#1f638d',
    950: '#000000',
  },
}

SCSS

$custom: #1f638d;
$custom-light: #6c8fae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f638d",
  "rgb": {
    "r": 31,
    "g": 99,
    "b": 141
  },
  "hsl": {
    "h": 202.909,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.47813,
    "c": 0.09473,
    "h": 240.5
  },
  "luminance": 0.11138
}

Semantic roles & 50–950 ramp

primary

#1F638D

secondary

#BB774D

accent

#8041E7

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1F638D

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

Preview Lab → · Contrast checker → · Palette generator →