#1B313D#1B313D

#1B313D is a dark, muted cyan. Relative luminance 0.028; OKLCH L 30.0% C 0.035 H 233.6°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B313D
RGB	rgb(27, 49, 61)
HSL	hsl(201, 39%, 17%)
HSV	hsv(201, 56%, 24%)
CMYK	cmyk(55.7%, 19.7%, 0%, 76.1%)
CIE-LAB	lab(19.08, -4.69, -10.27)
CIE-LCH	lch(19.08, 11.29, 245.46°)
OKLab	oklab(30.05% -0.021 -0.0285)
OKLCH	oklch(30.05% 0.035 233.6)
XYZ	xyz(2.3923, 2.7664, 4.8219)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B313D #3D271B

analogous

#1B3D38 #1B313D #1B203D

triadic

#1B313D #3D1B31 #313D1B

tetradic

#1B313D #381B3D #3D271B #203D1B

square

#1B313D #381B3D #3D271B #203D1B

split-complementary

#1B313D #3D1B20 #3D381B

monochromatic

#091115 #091115 #1B313D #2E5367 #417592

Accessibility & contrast

On white

13.52

#1B313D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B313D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B313D

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B313D	#FFFFFF	#000000	##FFFFFF
##1B313D	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B303E

Deuteranopia (green-blind)

#262D3D

Tritanopia (blue-blind)

#0A3435

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b313d;
/* rgb */ color: rgb(27, 49, 61);
/* oklch */ color: oklch(30.0% 0.035 233.6);

Tailwind

colors: {
  custom: {
    50: '#5a6972',
    500: '#1b313d',
    950: '#000000',
  },
}

SCSS

$custom: #1b313d;
$custom-light: #5a6972;
$custom-dark: #000000;

JSON

{
  "hex": "#1b313d",
  "rgb": {
    "r": 27,
    "g": 49,
    "b": 61
  },
  "hsl": {
    "h": 201.176,
    "s": 38.636,
    "l": 17.255
  },
  "oklch": {
    "l": 0.30048,
    "c": 0.03543,
    "h": 233.6
  },
  "luminance": 0.02767
}

Semantic roles & 50–950 ramp

primary

#1B313D

secondary

#725342

accent

#8359CF

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#040608

muted

#797A7B

Preview Lab

Preview with #1B313D

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

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