#1F559D#1F559D

#1F559D is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.4% C 0.130 H 257.0°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F559D
RGB	rgb(31, 85, 157)
HSL	hsl(214, 67%, 37%)
HSV	hsv(214, 80%, 62%)
CMYK	cmyk(80.3%, 45.9%, 0%, 38.4%)
CIE-LAB	lab(36.41, 9.34, -44.19)
CIE-LCH	lch(36.41, 45.16, 281.93°)
OKLab	oklab(45.44% -0.0293 -0.1268)
OKLCH	oklch(45.44% 0.13 257)
XYZ	xyz(9.8971, 9.2214, 33.1500)
Luminance	0.0922 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F559D #9D671F

analogous

#1F949D #1F559D #281F9D

triadic

#1F559D #9D1F55 #559D1F

tetradic

#1F559D #9D1F94 #9D671F #1F9D28

square

#1F559D #9D1F94 #9D671F #1F9D28

split-complementary

#1F559D #9D281F #949D1F

monochromatic

#0B1E37 #15396A #1F559D #2971D0 #5892DE

Accessibility & contrast

On white

7.38

#1F559D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1F559D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F559D

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F559D	#FFFFFF	#000000	##FFFFFF
##1F559D	1.00	7.38	2.84	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5CA0

Deuteranopia (green-blind)

#13509C

Tritanopia (blue-blind)

#006671

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f559d;
/* rgb */ color: rgb(31, 85, 157);
/* oklch */ color: oklch(45.4% 0.130 257.0);

Tailwind

colors: {
  custom: {
    50: '#6f84ba',
    500: '#1f559d',
    950: '#000000',
  },
}

SCSS

$custom: #1f559d;
$custom-light: #6f84ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f559d",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 157
  },
  "hsl": {
    "h": 214.286,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45444,
    "c": 0.1301,
    "h": 257
  },
  "luminance": 0.09223
}

Semantic roles & 50–950 ramp

primary

#1F559D

secondary

#C29456

accent

#A03EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F559D

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

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