#1D5B9E#1D5B9E

#1D5B9E is a mid, vivid cyan. Relative luminance 0.102; OKLCH L 46.9% C 0.125 H 253.6°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#1D5B9E
RGB	rgb(29, 91, 158)
HSL	hsl(211, 69%, 37%)
HSV	hsv(211, 82%, 62%)
CMYK	cmyk(81.6%, 42.4%, 0%, 38%)
CIE-LAB	lab(38.22, 5.58, -41.89)
CIE-LCH	lch(38.22, 42.26, 277.59°)
OKLab	oklab(46.85% -0.0353 -0.1199)
OKLCH	oklch(46.85% 0.125 253.6)
XYZ	xyz(10.4170, 10.2107, 33.7630)
Luminance	0.1021 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5B9E #9E601D

analogous

#1D9C9E #1D5B9E #201D9E

triadic

#1D5B9E #9E1D5B #5B9E1D

tetradic

#1D5B9E #9E1D9C #9E601D #1D9E20

square

#1D5B9E #9E1D9C #9E601D #1D9E20

split-complementary

#1D5B9E #9E201D #9C9E1D

monochromatic

#0A1F37 #143D6A #1D5B9E #2679D2 #5698E0

Accessibility & contrast

On white

6.90

#1D5B9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#1D5B9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5B9E

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5B9E	#FFFFFF	#000000	##FFFFFF
##1D5B9E	1.00	6.90	3.04	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A60A1

Deuteranopia (green-blind)

#23559D

Tritanopia (blue-blind)

#006B75

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1d5b9e;
/* rgb */ color: rgb(29, 91, 158);
/* oklch */ color: oklch(46.9% 0.125 253.6);

Tailwind

colors: {
  custom: {
    50: '#6f88bb',
    500: '#1d5b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1d5b9e;
$custom-light: #6f88bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5b9e",
  "rgb": {
    "r": 29,
    "g": 91,
    "b": 158
  },
  "hsl": {
    "h": 211.163,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.46853,
    "c": 0.125,
    "h": 253.6
  },
  "luminance": 0.10212
}

Semantic roles & 50–950 ramp

primary

#1D5B9E

secondary

#C38E54

accent

#973CEC

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1D5B9E

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

Preview Lab → · Contrast checker → · Palette generator →