#1F588F#1F588F

#1F588F is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.2% C 0.108 H 250.9°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F588F
RGB	rgb(31, 88, 143)
HSL	hsl(209, 64%, 34%)
HSV	hsv(209, 78%, 56%)
CMYK	cmyk(78.3%, 38.5%, 0%, 43.9%)
CIE-LAB	lab(36.47, 1.84, -35.64)
CIE-LCH	lch(36.47, 35.69, 272.95°)
OKLab	oklab(45.21% -0.0352 -0.1016)
OKLCH	oklch(45.21% 0.108 250.9)
XYZ	xyz(9.0109, 9.2529, 27.2924)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F588F #8F561F

analogous

#1F8F8E #1F588F #1F208F

triadic

#1F588F #8F1F58 #588F1F

tetradic

#1F588F #8E1F8F #8F561F #208F1F

square

#1F588F #8E1F8F #8F561F #208F1F

split-complementary

#1F588F #8F1F20 #8F8E1F

monochromatic

#091A2A #14395D #1F588F #2A77C1 #4F95D9

Accessibility & contrast

On white

7.37

#1F588F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#1F588F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F588F

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F588F	#FFFFFF	#000000	##FFFFFF
##1F588F	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5B91

Deuteranopia (green-blind)

#2D518E

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f588f;
/* rgb */ color: rgb(31, 88, 143);
/* oklch */ color: oklch(45.2% 0.108 250.9);

Tailwind

colors: {
  custom: {
    50: '#6c86b0',
    500: '#1f588f',
    950: '#000000',
  },
}

SCSS

$custom: #1f588f;
$custom-light: #6c86b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f588f",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 143
  },
  "hsl": {
    "h": 209.464,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.45214,
    "c": 0.10754,
    "h": 250.9
  },
  "luminance": 0.09254
}

Semantic roles & 50–950 ramp

primary

#1F588F

secondary

#BC844E

accent

#9240E7

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1F588F

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

Preview Lab → · Contrast checker → · Palette generator →