#1F599D#1F599D

#1F599D is a mid, vivid cyan. Relative luminance 0.099; OKLCH L 46.4% C 0.125 H 254.9°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#1F599D
RGB	rgb(31, 89, 157)
HSL	hsl(212, 67%, 37%)
HSV	hsv(212, 80%, 62%)
CMYK	cmyk(80.3%, 43.3%, 0%, 38.4%)
CIE-LAB	lab(37.61, 6.71, -42.27)
CIE-LCH	lch(37.61, 42.80, 279.01°)
OKLab	oklab(46.37% -0.0327 -0.121)
OKLCH	oklch(46.37% 0.125 254.9)
XYZ	xyz(10.2210, 9.8692, 33.2580)
Luminance	0.0987 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F599D #9D631F

analogous

#1F989D #1F599D #241F9D

triadic

#1F599D #9D1F59 #599D1F

tetradic

#1F599D #9D1F98 #9D631F #1F9D24

square

#1F599D #9D1F98 #9D631F #1F9D24

split-complementary

#1F599D #9D241F #989D1F

monochromatic

#0B1F37 #153C6A #1F599D #2976D0 #5896DE

Accessibility & contrast

On white

7.06

#1F599D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#1F599D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F599D

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F599D	#FFFFFF	#000000	##FFFFFF
##1F599D	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375FA0

Deuteranopia (green-blind)

#20539C

Tritanopia (blue-blind)

#006973

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1f599d;
/* rgb */ color: rgb(31, 89, 157);
/* oklch */ color: oklch(46.4% 0.125 254.9);

Tailwind

colors: {
  custom: {
    50: '#6f87ba',
    500: '#1f599d',
    950: '#000000',
  },
}

SCSS

$custom: #1f599d;
$custom-light: #6f87ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f599d",
  "rgb": {
    "r": 31,
    "g": 89,
    "b": 157
  },
  "hsl": {
    "h": 212.381,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.46373,
    "c": 0.12537,
    "h": 254.9
  },
  "luminance": 0.0987
}

Semantic roles & 50–950 ramp

primary

#1F599D

secondary

#C29056

accent

#9B3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1F599D

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

Preview Lab → · Contrast checker → · Palette generator →