#1B5F88#1B5F88

#1B5F88 is a mid, moderate cyan. Relative luminance 0.102; OKLCH L 46.4% C 0.093 H 240.3°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#1B5F88
RGB	rgb(27, 95, 136)
HSL	hsl(203, 67%, 32%)
HSV	hsv(203, 80%, 53%)
CMYK	cmyk(80.1%, 30.1%, 0%, 46.7%)
CIE-LAB	lab(38.19, -5.79, -28.68)
CIE-LCH	lch(38.19, 29.26, 258.59°)
OKLab	oklab(46.42% -0.0463 -0.0812)
OKLCH	oklch(46.42% 0.093 240.3)
XYZ	xyz(8.9864, 10.1939, 24.7818)
Luminance	0.1019 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5F88 #88441B

analogous

#1B887B #1B5F88 #1B2988

triadic

#1B5F88 #881B5F #5F881B

tetradic

#1B5F88 #7B1B88 #88441B #29881B

square

#1B5F88 #7B1B88 #88441B #29881B

split-complementary

#1B5F88 #881B29 #887B1B

monochromatic

#071822 #113B55 #1B5F88 #2583BB #44A1DA

Accessibility & contrast

On white

6.91

#1B5F88 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#1B5F88 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5F88

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5F88	#FFFFFF	#000000	##FFFFFF
##1B5F88	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5F8A

Deuteranopia (green-blind)

#3D5587

Tritanopia (blue-blind)

#00696D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1b5f88;
/* rgb */ color: rgb(27, 95, 136);
/* oklch */ color: oklch(46.4% 0.093 240.3);

Tailwind

colors: {
  custom: {
    50: '#698cab',
    500: '#1b5f88',
    950: '#000000',
  },
}

SCSS

$custom: #1b5f88;
$custom-light: #698cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5f88",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 136
  },
  "hsl": {
    "h": 202.569,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.46417,
    "c": 0.09348,
    "h": 240.3
  },
  "luminance": 0.10195
}

Semantic roles & 50–950 ramp

primary

#1B5F88

secondary

#BB7144

accent

#7F3EEA

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C10

muted

#7A7D7F

Preview Lab

Preview with #1B5F88

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

Preview Lab → · Contrast checker → · Palette generator →