#1D5DB3#1D5DB3

#1D5DB3 is a mid, vivid cyan. Relative luminance 0.113; OKLCH L 48.8% C 0.151 H 257.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#1D5DB3
RGB	rgb(29, 93, 179)
HSL	hsl(214, 72%, 41%)
HSV	hsv(214, 84%, 70%)
CMYK	cmyk(83.8%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.15, 12.60, -51.24)
CIE-LCH	lch(40.15, 52.76, 283.82°)
OKLab	oklab(48.78% -0.0328 -0.1473)
OKLCH	oklch(48.78% 0.151 257.5)
XYZ	xyz(12.5547, 11.3430, 44.1668)
Luminance	0.1134 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5DB3 #B3731D

analogous

#1DA8B3 #1D5DB3 #281DB3

triadic

#1D5DB3 #B31D5D #5DB31D

tetradic

#1D5DB3 #B31DA8 #B3731D #1DB328

square

#1D5DB3 #B31DA8 #B3731D #1DB328

split-complementary

#1D5DB3 #B3281D #A8B31D

monochromatic

#0C264A #14427E #1D5DB3 #307ADD #649CE6

Accessibility & contrast

On white

6.42

#1D5DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#1D5DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5DB3

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5DB3	#FFFFFF	#000000	##FFFFFF
##1D5DB3	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C66B6

Deuteranopia (green-blind)

#0058B1

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #1d5db3;
/* rgb */ color: rgb(29, 93, 179);
/* oklch */ color: oklch(48.8% 0.151 257.5);

Tailwind

colors: {
  custom: {
    50: '#748aca',
    500: '#1d5db3',
    950: '#000000',
  },
}

SCSS

$custom: #1d5db3;
$custom-light: #748aca;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5db3",
  "rgb": {
    "r": 29,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 214.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.48783,
    "c": 0.15095,
    "h": 257.5
  },
  "luminance": 0.11345
}

Semantic roles & 50–950 ramp

primary

#1D5DB3

secondary

#CB9E61

accent

#A139EF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1D5DB3

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

Preview Lab → · Contrast checker → · Palette generator →