#1D538F#1D538F

#1D538F is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.9% C 0.114 H 253.8°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#1D538F
RGB	rgb(29, 83, 143)
HSL	hsl(212, 66%, 34%)
HSV	hsv(212, 80%, 56%)
CMYK	cmyk(79.7%, 42%, 0%, 43.9%)
CIE-LAB	lab(34.86, 4.85, -38.20)
CIE-LCH	lch(34.86, 38.51, 277.24°)
OKLab	oklab(43.94% -0.0318 -0.1092)
OKLCH	oklch(43.94% 0.114 253.8)
XYZ	xyz(8.5560, 8.4299, 27.1575)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D538F #8F591D

analogous

#1D8C8F #1D538F #201D8F

triadic

#1D538F #8F1D53 #538F1D

tetradic

#1D538F #8F1D8C #8F591D #1D8F20

square

#1D538F #8F1D8C #8F591D #1D8F20

split-complementary

#1D538F #8F201D #8C8F1D

monochromatic

#081829 #13355C #1D538F #2771C2 #4C8FDB

Accessibility & contrast

On white

7.82

#1D538F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1D538F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D538F

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D538F	#FFFFFF	#000000	##FFFFFF
##1D538F	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365891

Deuteranopia (green-blind)

#224D8E

Tritanopia (blue-blind)

#00616A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d538f;
/* rgb */ color: rgb(29, 83, 143);
/* oklch */ color: oklch(43.9% 0.114 253.8);

Tailwind

colors: {
  custom: {
    50: '#6b82b0',
    500: '#1d538f',
    950: '#000000',
  },
}

SCSS

$custom: #1d538f;
$custom-light: #6b82b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d538f",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 143
  },
  "hsl": {
    "h": 211.579,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43944,
    "c": 0.11373,
    "h": 253.8
  },
  "luminance": 0.08431
}

Semantic roles & 50–950 ramp

primary

#1D538F

secondary

#BD874B

accent

#983FE9

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1D538F

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

Preview Lab → · Contrast checker → · Palette generator →