#1B5388#1B5388

#1B5388 is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.4% C 0.105 H 250.7°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B5388
RGB	rgb(27, 83, 136)
HSL	hsl(209, 67%, 32%)
HSV	hsv(209, 80%, 53%)
CMYK	cmyk(80.1%, 39%, 0%, 46.7%)
CIE-LAB	lab(34.39, 1.82, -34.69)
CIE-LCH	lch(34.39, 34.73, 273.00°)
OKLab	oklab(43.42% -0.0347 -0.0989)
OKLCH	oklch(43.42% 0.105 250.7)
XYZ	xyz(7.9875, 8.1961, 24.4488)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5388 #88501B

analogous

#1B8887 #1B5388 #1B1D88

triadic

#1B5388 #881B53 #53881B

tetradic

#1B5388 #871B88 #88501B #1D881B

square

#1B5388 #871B88 #88501B #1D881B

split-complementary

#1B5388 #881B1D #88871B

monochromatic

#071522 #113455 #1B5388 #2572BB #4491DA

Accessibility & contrast

On white

7.96

#1B5388 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1B5388 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5388

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5388	#FFFFFF	#000000	##FFFFFF
##1B5388	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A568A

Deuteranopia (green-blind)

#294C87

Tritanopia (blue-blind)

#006067

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b5388;
/* rgb */ color: rgb(27, 83, 136);
/* oklch */ color: oklch(43.4% 0.105 250.7);

Tailwind

colors: {
  custom: {
    50: '#6983ab',
    500: '#1b5388',
    950: '#000000',
  },
}

SCSS

$custom: #1b5388;
$custom-light: #6983ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5388",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 136
  },
  "hsl": {
    "h": 209.174,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.43422,
    "c": 0.10483,
    "h": 250.7
  },
  "luminance": 0.08197
}

Semantic roles & 50–950 ramp

primary

#1B5388

secondary

#BB7E44

accent

#923EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5388

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

Preview Lab → · Contrast checker → · Palette generator →