#1F599F#1F599F

#1F599F is a mid, vivid cyan. Relative luminance 0.099; OKLCH L 46.5% C 0.128 H 255.4°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#1F599F
RGB	rgb(31, 89, 159)
HSL	hsl(213, 67%, 37%)
HSV	hsv(213, 81%, 62%)
CMYK	cmyk(80.5%, 44%, 0%, 37.6%)
CIE-LAB	lab(37.73, 7.50, -43.27)
CIE-LCH	lch(37.73, 43.91, 279.83°)
OKLab	oklab(46.51% -0.0323 -0.124)
OKLCH	oklch(46.51% 0.128 255.4)
XYZ	xyz(10.3931, 9.9380, 34.1646)
Luminance	0.0994 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F599F #9F651F

analogous

#1F999F #1F599F #251F9F

triadic

#1F599F #9F1F59 #599F1F

tetradic

#1F599F #9F1F99 #9F651F #1F9F25

square

#1F599F #9F1F99 #9F651F #1F9F25

split-complementary

#1F599F #9F251F #999F1F

monochromatic

#0B2039 #153C6C #1F599F #2976D2 #5A96DF

Accessibility & contrast

On white

7.03

#1F599F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#1F599F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F599F

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F599F	#FFFFFF	#000000	##FFFFFF
##1F599F	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355FA2

Deuteranopia (green-blind)

#1D539E

Tritanopia (blue-blind)

#006A74

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1f599f;
/* rgb */ color: rgb(31, 89, 159);
/* oklch */ color: oklch(46.5% 0.128 255.4);

Tailwind

colors: {
  custom: {
    50: '#6f87bc',
    500: '#1f599f',
    950: '#000000',
  },
}

SCSS

$custom: #1f599f;
$custom-light: #6f87bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f599f",
  "rgb": {
    "r": 31,
    "g": 89,
    "b": 159
  },
  "hsl": {
    "h": 212.813,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.4651,
    "c": 0.1281,
    "h": 255.4
  },
  "luminance": 0.09939
}

Semantic roles & 50–950 ramp

primary

#1F599F

secondary

#C39257

accent

#9C3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1F599F

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

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