#1F638E#1F638E

#1F638E is a mid, moderate cyan. Relative luminance 0.112; OKLCH L 47.9% C 0.096 H 241.2°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F638E
RGB	rgb(31, 99, 142)
HSL	hsl(203, 64%, 34%)
HSV	hsv(203, 78%, 56%)
CMYK	cmyk(78.2%, 30.3%, 0%, 44.3%)
CIE-LAB	lab(39.86, -5.46, -29.68)
CIE-LCH	lch(39.86, 30.18, 259.57°)
OKLab	oklab(47.87% -0.0463 -0.084)
OKLCH	oklch(47.87% 0.096 241.2)
XYZ	xyz(9.9075, 11.1668, 27.2192)
Luminance	0.1117 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F638E #8E4A1F

analogous

#1F8E82 #1F638E #1F2C8E

triadic

#1F638E #8E1F63 #638E1F

tetradic

#1F638E #821F8E #8E4A1F #2C8E1F

square

#1F638E #821F8E #8E4A1F #2C8E1F

split-complementary

#1F638E #8E1F2C #8E821F

monochromatic

#091D2A #14405C #1F638E #2A86C0 #4FA3D9

Accessibility & contrast

On white

6.49

#1F638E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#1F638E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F638E

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F638E	#FFFFFF	#000000	##FFFFFF
##1F638E	1.00	6.49	3.23	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F6490

Deuteranopia (green-blind)

#40598D

Tritanopia (blue-blind)

#006E72

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1f638e;
/* rgb */ color: rgb(31, 99, 142);
/* oklch */ color: oklch(47.9% 0.096 241.2);

Tailwind

colors: {
  custom: {
    50: '#6c8faf',
    500: '#1f638e',
    950: '#000000',
  },
}

SCSS

$custom: #1f638e;
$custom-light: #6c8faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f638e",
  "rgb": {
    "r": 31,
    "g": 99,
    "b": 142
  },
  "hsl": {
    "h": 203.243,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.47869,
    "c": 0.0959,
    "h": 241.2
  },
  "luminance": 0.11168
}

Semantic roles & 50–950 ramp

primary

#1F638E

secondary

#BB784D

accent

#8141E7

background

#F7F8FA

surface

#EDF0F4

border

#C8CBCE

text

#080C10

muted

#7B7D7F

Preview Lab

Preview with #1F638E

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

Preview Lab → · Contrast checker → · Palette generator →