#1D5B8B#1D5B8B

#1D5B8B is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.6% C 0.100 H 246.2°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#1D5B8B
RGB	rgb(29, 91, 139)
HSL	hsl(206, 65%, 33%)
HSV	hsv(206, 79%, 55%)
CMYK	cmyk(79.1%, 34.5%, 0%, 45.5%)
CIE-LAB	lab(37.13, -1.89, -32.17)
CIE-LCH	lch(37.13, 32.23, 266.64°)
OKLab	oklab(45.64% -0.0404 -0.0914)
OKLCH	oklch(45.64% 0.1 246.2)
XYZ	xyz(8.9062, 9.6064, 25.8059)
Luminance	0.0961 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5B8B #8B4D1D

analogous

#1D8B84 #1D5B8B #1D248B

triadic

#1D5B8B #8B1D5B #5B8B1D

tetradic

#1D5B8B #841D8B #8B4D1D #248B1D

square

#1D5B8B #841D8B #8B4D1D #248B1D

split-complementary

#1D5B8B #8B1D24 #8B841D

monochromatic

#081926 #123A58 #1D5B8B #287CBE #499AD9

Accessibility & contrast

On white

7.19

#1D5B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1D5B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5B8B

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5B8B	#FFFFFF	#000000	##FFFFFF
##1D5B8B	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455D8D

Deuteranopia (green-blind)

#35538A

Tritanopia (blue-blind)

#00676C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d5b8b;
/* rgb */ color: rgb(29, 91, 139);
/* oklch */ color: oklch(45.6% 0.100 246.2);

Tailwind

colors: {
  custom: {
    50: '#6a89ad',
    500: '#1d5b8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d5b8b;
$custom-light: #6a89ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5b8b",
  "rgb": {
    "r": 29,
    "g": 91,
    "b": 139
  },
  "hsl": {
    "h": 206.182,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.45643,
    "c": 0.09994,
    "h": 246.2
  },
  "luminance": 0.09607
}

Semantic roles & 50–950 ramp

primary

#1D5B8B

secondary

#BB7B49

accent

#893FE8

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1D5B8B

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

Preview Lab → · Contrast checker → · Palette generator →