#1D538C#1D538C

#1D538C is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.7% C 0.110 H 252.8°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#1D538C
RGB	rgb(29, 83, 140)
HSL	hsl(211, 66%, 33%)
HSV	hsv(211, 79%, 55%)
CMYK	cmyk(79.3%, 40.7%, 0%, 45.1%)
CIE-LAB	lab(34.68, 3.66, -36.66)
CIE-LCH	lch(34.68, 36.84, 275.69°)
OKLab	oklab(43.74% -0.0325 -0.1047)
OKLCH	oklch(43.74% 0.11 252.8)
XYZ	xyz(8.3318, 8.3402, 25.9766)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D538C #8C561D

analogous

#1D8A8C #1D538C #1F1D8C

triadic

#1D538C #8C1D53 #538C1D

tetradic

#1D538C #8C1D8A #8C561D #1D8C1F

square

#1D538C #8C1D8A #8C561D #1D8C1F

split-complementary

#1D538C #8C1F1D #8A8C1D

monochromatic

#081727 #123559 #1D538C #2871BF #4A90D9

Accessibility & contrast

On white

7.87

#1D538C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1D538C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D538C

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D538C	#FFFFFF	#000000	##FFFFFF
##1D538C	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578E

Deuteranopia (green-blind)

#264D8B

Tritanopia (blue-blind)

#006168

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d538c;
/* rgb */ color: rgb(29, 83, 140);
/* oklch */ color: oklch(43.7% 0.110 252.8);

Tailwind

colors: {
  custom: {
    50: '#6b82ae',
    500: '#1d538c',
    950: '#000000',
  },
}

SCSS

$custom: #1d538c;
$custom-light: #6b82ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d538c",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 140
  },
  "hsl": {
    "h": 210.811,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.43744,
    "c": 0.10962,
    "h": 252.8
  },
  "luminance": 0.08341
}

Semantic roles & 50–950 ramp

primary

#1D538C

secondary

#BC8449

accent

#963FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1D538C

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

Preview Lab → · Contrast checker → · Palette generator →