#1F599B#1F599B

#1F599B is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.2% C 0.123 H 254.3°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#1F599B
RGB	rgb(31, 89, 155)
HSL	hsl(212, 67%, 36%)
HSV	hsv(212, 80%, 61%)
CMYK	cmyk(80%, 42.6%, 0%, 39.2%)
CIE-LAB	lab(37.48, 5.92, -41.26)
CIE-LCH	lch(37.48, 41.69, 278.16°)
OKLab	oklab(46.24% -0.0332 -0.1181)
OKLCH	oklch(46.24% 0.123 254.3)
XYZ	xyz(10.0516, 9.8014, 32.3661)
Luminance	0.0980 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F599B #9B611F

analogous

#1F979B #1F599B #231F9B

triadic

#1F599B #9B1F59 #599B1F

tetradic

#1F599B #9B1F97 #9B611F #1F9B23

square

#1F599B #9B1F97 #9B611F #1F9B23

split-complementary

#1F599B #9B231F #979B1F

monochromatic

#0B1E35 #153C68 #1F599B #2976CE #5796DD

Accessibility & contrast

On white

7.09

#1F599B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#1F599B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F599B

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F599B	#FFFFFF	#000000	##FFFFFF
##1F599B	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385E9E

Deuteranopia (green-blind)

#22539A

Tritanopia (blue-blind)

#006972

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1f599b;
/* rgb */ color: rgb(31, 89, 155);
/* oklch */ color: oklch(46.2% 0.123 254.3);

Tailwind

colors: {
  custom: {
    50: '#6f87b9',
    500: '#1f599b',
    950: '#000000',
  },
}

SCSS

$custom: #1f599b;
$custom-light: #6f87b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f599b",
  "rgb": {
    "r": 31,
    "g": 89,
    "b": 155
  },
  "hsl": {
    "h": 211.935,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.46238,
    "c": 0.12265,
    "h": 254.3
  },
  "luminance": 0.09803
}

Semantic roles & 50–950 ramp

primary

#1F599B

secondary

#C18E55

accent

#993EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1F599B

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

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