#1D539E#1D539E

#1D539E is a dark, vivid cyan. Relative luminance 0.089; OKLCH L 45.0% C 0.134 H 257.7°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#1D539E
RGB	rgb(29, 83, 158)
HSL	hsl(215, 69%, 37%)
HSV	hsv(215, 82%, 62%)
CMYK	cmyk(81.6%, 47.5%, 0%, 38%)
CIE-LAB	lab(35.82, 10.85, -45.74)
CIE-LCH	lch(35.82, 47.00, 283.34°)
OKLab	oklab(45% -0.0286 -0.1314)
OKLCH	oklch(45% 0.134 257.7)
XYZ	xyz(9.7692, 8.9152, 33.5470)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D539E #9E681D

analogous

#1D949E #1D539E #281D9E

triadic

#1D539E #9E1D53 #539E1D

tetradic

#1D539E #9E1D94 #9E681D #1D9E28

square

#1D539E #9E1D94 #9E681D #1D9E28

split-complementary

#1D539E #9E281D #949E1D

monochromatic

#0A1D37 #14386A #1D539E #266ED2 #568FE0

Accessibility & contrast

On white

7.55

#1D539E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#1D539E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D539E

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D539E	#FFFFFF	#000000	##FFFFFF
##1D539E	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5AA1

Deuteranopia (green-blind)

#034F9D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1d539e;
/* rgb */ color: rgb(29, 83, 158);
/* oklch */ color: oklch(45.0% 0.134 257.7);

Tailwind

colors: {
  custom: {
    50: '#6f82bb',
    500: '#1d539e',
    950: '#000000',
  },
}

SCSS

$custom: #1d539e;
$custom-light: #6f82bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d539e",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 158
  },
  "hsl": {
    "h": 214.884,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44995,
    "c": 0.13446,
    "h": 257.7
  },
  "luminance": 0.08916
}

Semantic roles & 50–950 ramp

primary

#1D539E

secondary

#C39454

accent

#A23CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D539E

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

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