#1D588F#1D588F

#1D588F is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.2% C 0.108 H 250.4°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#1D588F
RGB	rgb(29, 88, 143)
HSL	hsl(209, 66%, 34%)
HSV	hsv(209, 80%, 56%)
CMYK	cmyk(79.7%, 38.5%, 0%, 43.9%)
CIE-LAB	lab(36.41, 1.59, -35.74)
CIE-LCH	lch(36.41, 35.77, 272.55°)
OKLab	oklab(45.15% -0.0364 -0.1019)
OKLCH	oklch(45.15% 0.108 250.4)
XYZ	xyz(8.9525, 9.2228, 27.2896)
Luminance	0.0922 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D588F #8F541D

analogous

#1D8F8D #1D588F #1D1F8F

triadic

#1D588F #8F1D58 #588F1D

tetradic

#1D588F #8D1D8F #8F541D #1F8F1D

square

#1D588F #8D1D8F #8F541D #1F8F1D

split-complementary

#1D588F #8F1D1F #8F8D1D

monochromatic

#081929 #13395C #1D588F #2777C2 #4C96DB

Accessibility & contrast

On white

7.38

#1D588F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1D588F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D588F

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D588F	#FFFFFF	#000000	##FFFFFF
##1D588F	1.00	7.38	2.84	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5B91

Deuteranopia (green-blind)

#2D518E

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1d588f;
/* rgb */ color: rgb(29, 88, 143);
/* oklch */ color: oklch(45.2% 0.108 250.4);

Tailwind

colors: {
  custom: {
    50: '#6b86b0',
    500: '#1d588f',
    950: '#000000',
  },
}

SCSS

$custom: #1d588f;
$custom-light: #6b86b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d588f",
  "rgb": {
    "r": 29,
    "g": 88,
    "b": 143
  },
  "hsl": {
    "h": 208.947,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.45153,
    "c": 0.10819,
    "h": 250.4
  },
  "luminance": 0.09224
}

Semantic roles & 50–950 ramp

primary

#1D588F

secondary

#BD824B

accent

#913FE9

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1D588F

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

Preview Lab → · Contrast checker → · Palette generator →