#1D375B#1D375B

#1D375B is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.5% C 0.072 H 256.9°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#1D375B
RGB	rgb(29, 55, 91)
HSL	hsl(215, 52%, 24%)
HSV	hsv(215, 68%, 36%)
CMYK	cmyk(68.1%, 39.6%, 0%, 64.3%)
CIE-LAB	lab(22.82, 3.04, -24.55)
CIE-LCH	lch(22.82, 24.74, 277.05°)
OKLab	oklab(33.54% -0.0162 -0.0697)
OKLCH	oklch(33.54% 0.072 256.9)
XYZ	xyz(3.7605, 3.7486, 10.4209)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D375B #5B411D

analogous

#1D565B #1D375B #221D5B

triadic

#1D375B #5B1D37 #375B1D

tetradic

#1D375B #5B1D56 #5B411D #1D5B22

square

#1D375B #5B1D56 #5B411D #1D5B22

split-complementary

#1D375B #5B221D #565B1D

monochromatic

#070E17 #0E1B2D #1D375B #2C5389 #3B6FB8

Accessibility & contrast

On white

12.00

#1D375B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1D375B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D375B

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D375B	#FFFFFF	#000000	##FFFFFF
##1D375B	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273A5C

Deuteranopia (green-blind)

#1F345A

Tritanopia (blue-blind)

#003F44

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1d375b;
/* rgb */ color: rgb(29, 55, 91);
/* oklch */ color: oklch(33.5% 0.072 256.9);

Tailwind

colors: {
  custom: {
    50: '#606d89',
    500: '#1d375b',
    950: '#000000',
  },
}

SCSS

$custom: #1d375b;
$custom-light: #606d89;
$custom-dark: #000000;

JSON

{
  "hex": "#1d375b",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 91
  },
  "hsl": {
    "h": 214.839,
    "s": 51.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33539,
    "c": 0.07154,
    "h": 256.9
  },
  "luminance": 0.03749
}

Semantic roles & 50–950 ramp

primary

#1D375B

secondary

#907044

accent

#9F4DDB

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1D375B

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

Preview Lab → · Contrast checker → · Palette generator →