#1D5E8B#1D5E8B

#1D5E8B is a mid, moderate cyan. Relative luminance 0.101; OKLCH L 46.4% C 0.097 H 243.5°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D5E8B
RGB	rgb(29, 94, 139)
HSL	hsl(205, 65%, 33%)
HSV	hsv(205, 79%, 55%)
CMYK	cmyk(79.1%, 32.4%, 0%, 45.5%)
CIE-LAB	lab(38.07, -3.77, -30.68)
CIE-LCH	lch(38.07, 30.91, 262.99°)
OKLab	oklab(46.39% -0.0433 -0.087)
OKLCH	oklch(46.39% 0.097 243.5)
XYZ	xyz(9.1678, 10.1296, 25.8931)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5E8B #8B4A1D

analogous

#1D8B81 #1D5E8B #1D278B

triadic

#1D5E8B #8B1D5E #5E8B1D

tetradic

#1D5E8B #811D8B #8B4A1D #278B1D

square

#1D5E8B #811D8B #8B4A1D #278B1D

split-complementary

#1D5E8B #8B1D27 #8B811D

monochromatic

#081A26 #123C58 #1D5E8B #2880BE #499ED9

Accessibility & contrast

On white

6.94

#1D5E8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#1D5E8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5E8B

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5E8B	#FFFFFF	#000000	##FFFFFF
##1D5E8B	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495F8D

Deuteranopia (green-blind)

#3A558A

Tritanopia (blue-blind)

#00696E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1d5e8b;
/* rgb */ color: rgb(29, 94, 139);
/* oklch */ color: oklch(46.4% 0.097 243.5);

Tailwind

colors: {
  custom: {
    50: '#6b8bad',
    500: '#1d5e8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d5e8b;
$custom-light: #6b8bad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5e8b",
  "rgb": {
    "r": 29,
    "g": 94,
    "b": 139
  },
  "hsl": {
    "h": 204.545,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.46391,
    "c": 0.09721,
    "h": 243.5
  },
  "luminance": 0.10131
}

Semantic roles & 50–950 ramp

primary

#1D5E8B

secondary

#BB7749

accent

#853FE8

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1D5E8B

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

Preview Lab → · Contrast checker → · Palette generator →