#1F579D#1F579D

#1F579D is a mid, vivid cyan. Relative luminance 0.095; OKLCH L 45.9% C 0.128 H 256.0°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F579D
RGB	rgb(31, 87, 157)
HSL	hsl(213, 67%, 37%)
HSV	hsv(213, 80%, 62%)
CMYK	cmyk(80.3%, 44.6%, 0%, 38.4%)
CIE-LAB	lab(37.01, 8.02, -43.23)
CIE-LCH	lch(37.01, 43.97, 280.51°)
OKLab	oklab(45.91% -0.031 -0.1239)
OKLCH	oklch(45.91% 0.128 256)
XYZ	xyz(10.0568, 9.5408, 33.2033)
Luminance	0.0954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F579D #9D651F

analogous

#1F969D #1F579D #261F9D

triadic

#1F579D #9D1F57 #579D1F

tetradic

#1F579D #9D1F96 #9D651F #1F9D26

square

#1F579D #9D1F96 #9D651F #1F9D26

split-complementary

#1F579D #9D261F #969D1F

monochromatic

#0B1E37 #153B6A #1F579D #2973D0 #5894DE

Accessibility & contrast

On white

7.22

#1F579D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#1F579D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F579D

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F579D	#FFFFFF	#000000	##FFFFFF
##1F579D	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#335DA0

Deuteranopia (green-blind)

#1A529C

Tritanopia (blue-blind)

#006872

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f579d;
/* rgb */ color: rgb(31, 87, 157);
/* oklch */ color: oklch(45.9% 0.128 256.0);

Tailwind

colors: {
  custom: {
    50: '#6f85ba',
    500: '#1f579d',
    950: '#000000',
  },
}

SCSS

$custom: #1f579d;
$custom-light: #6f85ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f579d",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 157
  },
  "hsl": {
    "h": 213.333,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45907,
    "c": 0.12771,
    "h": 256
  },
  "luminance": 0.09542
}

Semantic roles & 50–950 ramp

primary

#1F579D

secondary

#C29256

accent

#9D3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1F579D

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

Preview Lab → · Contrast checker → · Palette generator →