#1D5599#1D5599

#1D5599 is a mid, vivid cyan. Relative luminance 0.091; OKLCH L 45.1% C 0.125 H 255.5°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#1D5599
RGB	rgb(29, 85, 153)
HSL	hsl(213, 68%, 36%)
HSV	hsv(213, 81%, 60%)
CMYK	cmyk(81%, 44.4%, 0%, 40%)
CIE-LAB	lab(36.09, 7.52, -42.29)
CIE-LCH	lch(36.09, 42.95, 280.09°)
OKLab	oklab(45.1% -0.0313 -0.1212)
OKLCH	oklch(45.1% 0.125 255.5)
XYZ	xyz(9.5028, 9.0570, 31.3781)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5599 #99611D

analogous

#1D9399 #1D5599 #231D99

triadic

#1D5599 #991D55 #55991D

tetradic

#1D5599 #991D93 #99611D #1D9923

square

#1D5599 #991D93 #99611D #1D9923

split-complementary

#1D5599 #99231D #93991D

monochromatic

#091C32 #133866 #1D5599 #2772CC #5291DE

Accessibility & contrast

On white

7.47

#1D5599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#1D5599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5599

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5599	#FFFFFF	#000000	##FFFFFF
##1D5599	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325B9C

Deuteranopia (green-blind)

#1A5098

Tritanopia (blue-blind)

#00656F

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1d5599;
/* rgb */ color: rgb(29, 85, 153);
/* oklch */ color: oklch(45.1% 0.125 255.5);

Tailwind

colors: {
  custom: {
    50: '#6e84b7',
    500: '#1d5599',
    950: '#000000',
  },
}

SCSS

$custom: #1d5599;
$custom-light: #6e84b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5599",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 153
  },
  "hsl": {
    "h": 212.903,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.45102,
    "c": 0.12516,
    "h": 255.5
  },
  "luminance": 0.09058
}

Semantic roles & 50–950 ramp

primary

#1D5599

secondary

#C18E51

accent

#9C3DEB

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1D5599

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

Preview Lab → · Contrast checker → · Palette generator →