#1B5376#1B5376

#1B5376 is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.3% C 0.082 H 240.4°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1B5376
RGB	rgb(27, 83, 118)
HSL	hsl(203, 63%, 28%)
HSV	hsv(203, 77%, 46%)
CMYK	cmyk(77.1%, 29.7%, 0%, 53.7%)
CIE-LAB	lab(33.41, -5.25, -25.12)
CIE-LCH	lch(33.41, 25.67, 258.19°)
OKLab	oklab(42.33% -0.0403 -0.071)
OKLCH	oklch(42.33% 0.082 240.4)
XYZ	xyz(6.8140, 7.7267, 18.2683)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5376 #763E1B

analogous

#1B766B #1B5376 #1B2576

triadic

#1B5376 #761B53 #53761B

tetradic

#1B5376 #6B1B76 #763E1B #25761B

square

#1B5376 #6B1B76 #763E1B #25761B

split-complementary

#1B5376 #761B25 #766B1B

monochromatic

#061219 #103044 #1B5376 #2676A8 #3A97D2

Accessibility & contrast

On white

8.25

#1B5376 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1B5376 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5376

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5376	#FFFFFF	#000000	##FFFFFF
##1B5376	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#435378

Deuteranopia (green-blind)

#364B75

Tritanopia (blue-blind)

#005C5F

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5376;
/* rgb */ color: rgb(27, 83, 118);
/* oklch */ color: oklch(42.3% 0.082 240.4);

Tailwind

colors: {
  custom: {
    50: '#65839d',
    500: '#1b5376',
    950: '#000000',
  },
}

SCSS

$custom: #1b5376;
$custom-light: #65839d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5376",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 118
  },
  "hsl": {
    "h": 203.077,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.42328,
    "c": 0.08164,
    "h": 240.4
  },
  "luminance": 0.07728
}

Semantic roles & 50–950 ramp

primary

#1B5376

secondary

#AA6A42

accent

#8142E6

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5376

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

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