#1D5EB3#1D5EB3

#1D5EB3 is a mid, vivid cyan. Relative luminance 0.115; OKLCH L 49.0% C 0.150 H 257.1°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D5EB3
RGB	rgb(29, 94, 179)
HSL	hsl(214, 72%, 41%)
HSV	hsv(214, 84%, 70%)
CMYK	cmyk(83.8%, 47.5%, 0%, 29.8%)
CIE-LAB	lab(40.44, 11.95, -50.77)
CIE-LCH	lch(40.44, 52.16, 283.25°)
OKLab	oklab(49.01% -0.0335 -0.1459)
OKLCH	oklch(49.01% 0.15 257.1)
XYZ	xyz(12.6431, 11.5197, 44.1963)
Luminance	0.1152 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5EB3 #B3721D

analogous

#1DA9B3 #1D5EB3 #271DB3

triadic

#1D5EB3 #B31D5E #5EB31D

tetradic

#1D5EB3 #B31DA9 #B3721D #1DB327

square

#1D5EB3 #B31DA9 #B3721D #1DB327

split-complementary

#1D5EB3 #B3271D #A9B31D

monochromatic

#0C274A #14427E #1D5EB3 #307BDD #649DE6

Accessibility & contrast

On white

6.36

#1D5EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#1D5EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5EB3

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5EB3	#FFFFFF	#000000	##FFFFFF
##1D5EB3	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E66B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #1d5eb3;
/* rgb */ color: rgb(29, 94, 179);
/* oklch */ color: oklch(49.0% 0.150 257.1);

Tailwind

colors: {
  custom: {
    50: '#748bca',
    500: '#1d5eb3',
    950: '#000000',
  },
}

SCSS

$custom: #1d5eb3;
$custom-light: #748bca;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5eb3",
  "rgb": {
    "r": 29,
    "g": 94,
    "b": 179
  },
  "hsl": {
    "h": 214,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.49007,
    "c": 0.14975,
    "h": 257.1
  },
  "luminance": 0.11521
}

Semantic roles & 50–950 ramp

primary

#1D5EB3

secondary

#CB9D61

accent

#A039EF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1D5EB3

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

Preview Lab → · Contrast checker → · Palette generator →