#1D3F63#1D3F63

#1D3F63 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.1% C 0.074 H 251.7°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#1D3F63
RGB	rgb(29, 63, 99)
HSL	hsl(211, 55%, 25%)
HSV	hsv(211, 71%, 39%)
CMYK	cmyk(70.7%, 36.4%, 0%, 61.2%)
CIE-LAB	lab(25.91, 0.70, -24.87)
CIE-LCH	lch(25.91, 24.88, 271.62°)
OKLab	oklab(36.1% -0.0232 -0.0705)
OKLCH	oklch(36.1% 0.074 251.7)
XYZ	xyz(4.5355, 4.7166, 12.4733)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3F63 #63411D

analogous

#1D6263 #1D3F63 #1E1D63

triadic

#1D3F63 #631D3F #3F631D

tetradic

#1D3F63 #631D62 #63411D #1D631E

square

#1D3F63 #631D62 #63411D #1D631E

split-complementary

#1D3F63 #631E1D #62631D

monochromatic

#070F18 #0F2134 #1D3F63 #2B5D92 #397BC2

Accessibility & contrast

On white

10.81

#1D3F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1D3F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3F63

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3F63	#FFFFFF	#000000	##FFFFFF
##1D3F63	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4165

Deuteranopia (green-blind)

#253A62

Tritanopia (blue-blind)

#00474C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d3f63;
/* rgb */ color: rgb(29, 63, 99);
/* oklch */ color: oklch(36.1% 0.074 251.7);

Tailwind

colors: {
  custom: {
    50: '#62738f',
    500: '#1d3f63',
    950: '#000000',
  },
}

SCSS

$custom: #1d3f63;
$custom-light: #62738f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3f63",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 99
  },
  "hsl": {
    "h": 210.857,
    "s": 54.688,
    "l": 25.098
  },
  "oklch": {
    "l": 0.36105,
    "c": 0.07423,
    "h": 251.7
  },
  "luminance": 0.04717
}

Semantic roles & 50–950 ramp

primary

#1D3F63

secondary

#986F44

accent

#964ADE

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05080C

muted

#7A7B7D

Preview Lab

Preview with #1D3F63

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

Preview Lab → · Contrast checker → · Palette generator →