#1B5187#1B5187

#1B5187 is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.9% C 0.106 H 251.8°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B5187
RGB	rgb(27, 81, 135)
HSL	hsl(210, 67%, 32%)
HSV	hsv(210, 80%, 53%)
CMYK	cmyk(80%, 40%, 0%, 47.1%)
CIE-LAB	lab(33.70, 2.73, -35.16)
CIE-LCH	lch(33.70, 35.27, 274.44°)
OKLab	oklab(42.87% -0.0331 -0.1004)
OKLCH	oklch(42.87% 0.106 251.8)
XYZ	xyz(7.7659, 7.8662, 24.0260)
Luminance	0.0787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5187 #87511B

analogous

#1B8787 #1B5187 #1B1B87

triadic

#1B5187 #871B51 #51871B

tetradic

#1B5187 #871B87 #87511B #1B871B

square

#1B5187 #871B87 #87511B #1B871B

split-complementary

#1B5187 #871B1B #87871B

monochromatic

#071421 #113254 #1B5187 #2570BA #438ED9

Accessibility & contrast

On white

8.16

#1B5187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B5187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5187

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5187	#FFFFFF	#000000	##FFFFFF
##1B5187	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375589

Deuteranopia (green-blind)

#264B86

Tritanopia (blue-blind)

#005E65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5187;
/* rgb */ color: rgb(27, 81, 135);
/* oklch */ color: oklch(42.9% 0.106 251.8);

Tailwind

colors: {
  custom: {
    50: '#6981aa',
    500: '#1b5187',
    950: '#000000',
  },
}

SCSS

$custom: #1b5187;
$custom-light: #6981aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5187",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 135
  },
  "hsl": {
    "h": 210,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.42866,
    "c": 0.10567,
    "h": 251.8
  },
  "luminance": 0.07867
}

Semantic roles & 50–950 ramp

primary

#1B5187

secondary

#BA7F44

accent

#943EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5187

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

Preview Lab → · Contrast checker → · Palette generator →