#1D5F8B#1D5F8B

#1D5F8B is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.6% C 0.096 H 242.6°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D5F8B
RGB	rgb(29, 95, 139)
HSL	hsl(204, 65%, 33%)
HSV	hsv(204, 79%, 55%)
CMYK	cmyk(79.1%, 31.7%, 0%, 45.5%)
CIE-LAB	lab(38.39, -4.39, -30.18)
CIE-LCH	lch(38.39, 30.50, 261.72°)
OKLab	oklab(46.64% -0.0443 -0.0855)
OKLCH	oklch(46.64% 0.096 242.6)
XYZ	xyz(9.2573, 10.3086, 25.9230)
Luminance	0.1031 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5F8B #8B491D

analogous

#1D8B80 #1D5F8B #1D288B

triadic

#1D5F8B #8B1D5F #5F8B1D

tetradic

#1D5F8B #801D8B #8B491D #288B1D

square

#1D5F8B #801D8B #8B491D #288B1D

split-complementary

#1D5F8B #8B1D28 #8B801D

monochromatic

#081A26 #123C58 #1D5F8B #2882BE #49A0D9

Accessibility & contrast

On white

6.86

#1D5F8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1D5F8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5F8B

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5F8B	#FFFFFF	#000000	##FFFFFF
##1D5F8B	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B608D

Deuteranopia (green-blind)

#3B568A

Tritanopia (blue-blind)

#006A6F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1d5f8b;
/* rgb */ color: rgb(29, 95, 139);
/* oklch */ color: oklch(46.6% 0.096 242.6);

Tailwind

colors: {
  custom: {
    50: '#6b8cad',
    500: '#1d5f8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d5f8b;
$custom-light: #6b8cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5f8b",
  "rgb": {
    "r": 29,
    "g": 95,
    "b": 139
  },
  "hsl": {
    "h": 204,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.46641,
    "c": 0.09634,
    "h": 242.6
  },
  "luminance": 0.1031
}

Semantic roles & 50–950 ramp

primary

#1D5F8B

secondary

#BB7649

accent

#833FE8

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1D5F8B

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

Preview Lab → · Contrast checker → · Palette generator →