#1F559F#1F559F

#1F559F is a mid, vivid cyan. Relative luminance 0.093; OKLCH L 45.6% C 0.133 H 257.4°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F559F
RGB	rgb(31, 85, 159)
HSL	hsl(215, 67%, 37%)
HSV	hsv(215, 81%, 62%)
CMYK	cmyk(80.5%, 46.5%, 0%, 37.6%)
CIE-LAB	lab(36.54, 10.13, -45.18)
CIE-LCH	lch(36.54, 46.30, 282.64°)
OKLab	oklab(45.59% -0.0289 -0.1297)
OKLCH	oklch(45.59% 0.133 257.4)
XYZ	xyz(10.0693, 9.2903, 34.0567)
Luminance	0.0929 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F559F #9F691F

analogous

#1F959F #1F559F #291F9F

triadic

#1F559F #9F1F55 #559F1F

tetradic

#1F559F #9F1F95 #9F691F #1F9F29

square

#1F559F #9F1F95 #9F691F #1F9F29

split-complementary

#1F559F #9F291F #959F1F

monochromatic

#0B1E39 #153A6C #1F559F #2970D2 #5A92DF

Accessibility & contrast

On white

7.35

#1F559F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#1F559F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F559F

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F559F	#FFFFFF	#000000	##FFFFFF
##1F559F	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5CA2

Deuteranopia (green-blind)

#0D519E

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f559f;
/* rgb */ color: rgb(31, 85, 159);
/* oklch */ color: oklch(45.6% 0.133 257.4);

Tailwind

colors: {
  custom: {
    50: '#7084bc',
    500: '#1f559f',
    950: '#000000',
  },
}

SCSS

$custom: #1f559f;
$custom-light: #7084bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f559f",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 159
  },
  "hsl": {
    "h": 214.688,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.45586,
    "c": 0.13286,
    "h": 257.4
  },
  "luminance": 0.09292
}

Semantic roles & 50–950 ramp

primary

#1F559F

secondary

#C39557

accent

#A13EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F559F

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

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