#1B5372#1B5372

#1B5372 is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.1% C 0.077 H 237.2°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B5372
RGB	rgb(27, 83, 114)
HSL	hsl(201, 62%, 28%)
HSV	hsv(201, 76%, 45%)
CMYK	cmyk(76.3%, 27.2%, 0%, 55.3%)
CIE-LAB	lab(33.21, -6.79, -22.94)
CIE-LCH	lch(33.21, 23.93, 253.52°)
OKLab	oklab(42.11% -0.0417 -0.0647)
OKLCH	oklch(42.11% 0.077 237.2)
XYZ	xyz(6.5813, 7.6337, 17.0429)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5372 #723A1B

analogous

#1B7265 #1B5372 #1B2872

triadic

#1B5372 #721B53 #53721B

tetradic

#1B5372 #651B72 #723A1B #28721B

square

#1B5372 #651B72 #723A1B #28721B

split-complementary

#1B5372 #721B28 #72651B

monochromatic

#061219 #0F2F41 #1B5372 #2777A3 #389AD0

Accessibility & contrast

On white

8.31

#1B5372 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1B5372 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5372

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5372	#FFFFFF	#000000	##FFFFFF
##1B5372	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445373

Deuteranopia (green-blind)

#384A71

Tritanopia (blue-blind)

#005B5E

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b5372;
/* rgb */ color: rgb(27, 83, 114);
/* oklch */ color: oklch(42.1% 0.077 237.2);

Tailwind

colors: {
  custom: {
    50: '#65839a',
    500: '#1b5372',
    950: '#000000',
  },
}

SCSS

$custom: #1b5372;
$custom-light: #65839a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5372",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 114
  },
  "hsl": {
    "h": 201.379,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.42105,
    "c": 0.07698,
    "h": 237.2
  },
  "luminance": 0.07634
}

Semantic roles & 50–950 ramp

primary

#1B5372

secondary

#A76642

accent

#7D43E5

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5372

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

Preview Lab → · Contrast checker → · Palette generator →