#1B5880#1B5880

#1B5880 is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.2% C 0.090 H 242.0°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B5880
RGB	rgb(27, 88, 128)
HSL	hsl(204, 65%, 30%)
HSV	hsv(204, 79%, 50%)
CMYK	cmyk(78.9%, 31.3%, 0%, 49.8%)
CIE-LAB	lab(35.54, -4.53, -27.96)
CIE-LCH	lch(35.54, 28.33, 260.81°)
OKLab	oklab(44.18% -0.042 -0.0792)
OKLCH	oklch(44.18% 0.09 242)
XYZ	xyz(7.8365, 8.7700, 21.6977)
Luminance	0.0877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5880 #80431B

analogous

#1B8075 #1B5880 #1B2680

triadic

#1B5880 #801B58 #58801B

tetradic

#1B5880 #751B80 #80431B #26801B

square

#1B5880 #751B80 #80431B #26801B

split-complementary

#1B5880 #801B26 #80751B

monochromatic

#06131B #10354D #1B5880 #267BB3 #3F9AD6

Accessibility & contrast

On white

7.62

#1B5880 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1B5880 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5880

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5880	#FFFFFF	#000000	##FFFFFF
##1B5880	1.00	7.62	2.75	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455982

Deuteranopia (green-blind)

#374F7F

Tritanopia (blue-blind)

#006266

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b5880;
/* rgb */ color: rgb(27, 88, 128);
/* oklch */ color: oklch(44.2% 0.090 242.0);

Tailwind

colors: {
  custom: {
    50: '#6787a5',
    500: '#1b5880',
    950: '#000000',
  },
}

SCSS

$custom: #1b5880;
$custom-light: #6787a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5880",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 128
  },
  "hsl": {
    "h": 203.762,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.44183,
    "c": 0.08965,
    "h": 242
  },
  "luminance": 0.08771
}

Semantic roles & 50–950 ramp

primary

#1B5880

secondary

#B47043

accent

#8240E8

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5880

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

Preview Lab → · Contrast checker → · Palette generator →