#1F559C#1F559C

#1F559C is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.4% C 0.129 H 256.8°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F559C
RGB	rgb(31, 85, 156)
HSL	hsl(214, 67%, 37%)
HSV	hsv(214, 80%, 61%)
CMYK	cmyk(80.1%, 45.5%, 0%, 38.8%)
CIE-LAB	lab(36.34, 8.94, -43.69)
CIE-LCH	lch(36.34, 44.60, 281.56°)
OKLab	oklab(45.37% -0.0295 -0.1253)
OKLCH	oklch(45.37% 0.129 256.8)
XYZ	xyz(9.8121, 9.1874, 32.7023)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F559C #9C661F

analogous

#1F949C #1F559C #281F9C

triadic

#1F559C #9C1F55 #559C1F

tetradic

#1F559C #9C1F94 #9C661F #1F9C28

square

#1F559C #9C1F94 #9C661F #1F9C28

split-complementary

#1F559C #9C281F #949C1F

monochromatic

#0B1D36 #153969 #1F559C #2971CF #5892DE

Accessibility & contrast

On white

7.40

#1F559C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1F559C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F559C

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F559C	#FFFFFF	#000000	##FFFFFF
##1F559C	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#305C9F

Deuteranopia (green-blind)

#15509B

Tritanopia (blue-blind)

#006671

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f559c;
/* rgb */ color: rgb(31, 85, 156);
/* oklch */ color: oklch(45.4% 0.129 256.8);

Tailwind

colors: {
  custom: {
    50: '#6f84ba',
    500: '#1f559c',
    950: '#000000',
  },
}

SCSS

$custom: #1f559c;
$custom-light: #6f84ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f559c",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 156
  },
  "hsl": {
    "h": 214.08,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45373,
    "c": 0.12872,
    "h": 256.8
  },
  "luminance": 0.09189
}

Semantic roles & 50–950 ramp

primary

#1F559C

secondary

#C19355

accent

#A03EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F559C

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

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