#1F559B#1F559B

#1F559B is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.3% C 0.127 H 256.5°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F559B
RGB	rgb(31, 85, 155)
HSL	hsl(214, 67%, 36%)
HSV	hsv(214, 80%, 61%)
CMYK	cmyk(80%, 45.2%, 0%, 39.2%)
CIE-LAB	lab(36.28, 8.54, -43.19)
CIE-LCH	lch(36.28, 44.03, 281.19°)
OKLab	oklab(45.3% -0.0297 -0.1238)
OKLCH	oklch(45.3% 0.127 256.5)
XYZ	xyz(9.7278, 9.1537, 32.2581)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F559B #9B651F

analogous

#1F939B #1F559B #271F9B

triadic

#1F559B #9B1F55 #559B1F

tetradic

#1F559B #9B1F93 #9B651F #1F9B27

square

#1F559B #9B1F93 #9B651F #1F9B27

split-complementary

#1F559B #9B271F #939B1F

monochromatic

#0B1D35 #153968 #1F559B #2971CE #5792DD

Accessibility & contrast

On white

7.42

#1F559B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1F559B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F559B

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F559B	#FFFFFF	#000000	##FFFFFF
##1F559B	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315B9E

Deuteranopia (green-blind)

#17509A

Tritanopia (blue-blind)

#006670

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f559b;
/* rgb */ color: rgb(31, 85, 155);
/* oklch */ color: oklch(45.3% 0.127 256.5);

Tailwind

colors: {
  custom: {
    50: '#6f84b9',
    500: '#1f559b',
    950: '#000000',
  },
}

SCSS

$custom: #1f559b;
$custom-light: #6f84b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f559b",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 155
  },
  "hsl": {
    "h": 213.871,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.45303,
    "c": 0.12734,
    "h": 256.5
  },
  "luminance": 0.09155
}

Semantic roles & 50–950 ramp

primary

#1F559B

secondary

#C19255

accent

#9F3EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F559B

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

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