#1D5A8B#1D5A8B

#1D5A8B is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.4% C 0.101 H 247.0°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#1D5A8B
RGB	rgb(29, 90, 139)
HSL	hsl(207, 65%, 33%)
HSV	hsv(207, 79%, 55%)
CMYK	cmyk(79.1%, 35.3%, 0%, 45.5%)
CIE-LAB	lab(36.81, -1.26, -32.67)
CIE-LCH	lch(36.81, 32.69, 267.79°)
OKLab	oklab(45.4% -0.0394 -0.0929)
OKLCH	oklch(45.4% 0.101 247)
XYZ	xyz(8.8213, 9.4366, 25.7776)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5A8B #8B4E1D

analogous

#1D8B85 #1D5A8B #1D238B

triadic

#1D5A8B #8B1D5A #5A8B1D

tetradic

#1D5A8B #851D8B #8B4E1D #238B1D

square

#1D5A8B #851D8B #8B4E1D #238B1D

split-complementary

#1D5A8B #8B1D23 #8B851D

monochromatic

#081826 #123958 #1D5A8B #287BBE #4999D9

Accessibility & contrast

On white

7.27

#1D5A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1D5A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5A8B

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5A8B	#FFFFFF	#000000	##FFFFFF
##1D5A8B	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#435C8D

Deuteranopia (green-blind)

#33528A

Tritanopia (blue-blind)

#00666C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d5a8b;
/* rgb */ color: rgb(29, 90, 139);
/* oklch */ color: oklch(45.4% 0.101 247.0);

Tailwind

colors: {
  custom: {
    50: '#6a88ad',
    500: '#1d5a8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d5a8b;
$custom-light: #6a88ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5a8b",
  "rgb": {
    "r": 29,
    "g": 90,
    "b": 139
  },
  "hsl": {
    "h": 206.727,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.45395,
    "c": 0.1009,
    "h": 247
  },
  "luminance": 0.09438
}

Semantic roles & 50–950 ramp

primary

#1D5A8B

secondary

#BB7C49

accent

#8B3FE8

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1D5A8B

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

Preview Lab → · Contrast checker → · Palette generator →