#1A3757#1A3757

#1A3757 is a dark, moderate cyan. Relative luminance 0.036; OKLCH L 33.1% C 0.067 H 252.5°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#1A3757
RGB	rgb(26, 55, 87)
HSL	hsl(211, 54%, 22%)
HSV	hsv(211, 70%, 34%)
CMYK	cmyk(70.1%, 36.8%, 0%, 65.9%)
CIE-LAB	lab(22.44, 0.83, -22.53)
CIE-LCH	lch(22.44, 22.54, 272.12°)
OKLab	oklab(33.13% -0.0201 -0.0638)
OKLCH	oklch(33.13% 0.067 252.5)
XYZ	xyz(3.5119, 3.6398, 9.5324)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3757 #573A1A

analogous

#1A5657 #1A3757 #1B1A57

triadic

#1A3757 #571A37 #37571A

tetradic

#1A3757 #571A56 #573A1A #1A571B

square

#1A3757 #571A56 #573A1A #1A571B

split-complementary

#1A3757 #571B1A #56571A

monochromatic

#070F18 #0C1928 #1A3757 #285586 #3673B5

Accessibility & contrast

On white

12.15

#1A3757 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1A3757 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3757

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3757	#FFFFFF	#000000	##FFFFFF
##1A3757	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293958

Deuteranopia (green-blind)

#213356

Tritanopia (blue-blind)

#003E43

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1a3757;
/* rgb */ color: rgb(26, 55, 87);
/* oklch */ color: oklch(33.1% 0.067 252.5);

Tailwind

colors: {
  custom: {
    50: '#5e6d86',
    500: '#1a3757',
    950: '#000000',
  },
}

SCSS

$custom: #1a3757;
$custom-light: #5e6d86;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3757",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 87
  },
  "hsl": {
    "h": 211.475,
    "s": 53.982,
    "l": 22.157
  },
  "oklch": {
    "l": 0.33126,
    "c": 0.06691,
    "h": 252.5
  },
  "luminance": 0.0364
}

Semantic roles & 50–950 ramp

primary

#1A3757

secondary

#8D6840

accent

#984ADD

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1A3757

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

Preview Lab → · Contrast checker → · Palette generator →