#1D5FC9#1D5FC9

#1D5FC9 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 50.9% C 0.178 H 259.9°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D5FC9
RGB	rgb(29, 95, 201)
HSL	hsl(217, 75%, 45%)
HSV	hsv(217, 86%, 79%)
CMYK	cmyk(85.6%, 52.7%, 0%, 21.2%)
CIE-LAB	lab(42.25, 19.96, -60.66)
CIE-LCH	lch(42.25, 63.86, 288.21°)
OKLab	oklab(50.88% -0.0311 -0.175)
OKLCH	oklch(50.88% 0.178 259.9)
XYZ	xyz(15.1377, 12.6608, 56.8929)
Luminance	0.1266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5FC9 #C9871D

analogous

#1DB5C9 #1D5FC9 #311DC9

triadic

#1D5FC9 #C91D5F #5FC91D

tetradic

#1D5FC9 #C91DB5 #C9871D #1DC931

square

#1D5FC9 #C91DB5 #C9871D #1DC931

split-complementary

#1D5FC9 #C9311D #B5C91D

monochromatic

#0E2C5E #154694 #1D5FC9 #407FE3 #75A2EB

Accessibility & contrast

On white

5.94

#1D5FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#1D5FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5FC9

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5FC9	#FFFFFF	#000000	##FFFFFF
##1D5FC9	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#096CCD

Deuteranopia (green-blind)

#005CC7

Tritanopia (blue-blind)

#00798B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1d5fc9;
/* rgb */ color: rgb(29, 95, 201);
/* oklch */ color: oklch(50.9% 0.178 259.9);

Tailwind

colors: {
  custom: {
    50: '#798bda',
    500: '#1d5fc9',
    950: '#000000',
  },
}

SCSS

$custom: #1d5fc9;
$custom-light: #798bda;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5fc9",
  "rgb": {
    "r": 29,
    "g": 95,
    "b": 201
  },
  "hsl": {
    "h": 216.977,
    "s": 74.783,
    "l": 45.098
  },
  "oklch": {
    "l": 0.50875,
    "c": 0.17778,
    "h": 259.9
  },
  "luminance": 0.12663
}

Semantic roles & 50–950 ramp

primary

#1D5FC9

secondary

#D2AC70

accent

#AA36F1

background

#F8F8FD

surface

#EFF0FB

border

#CACBD4

text

#0B0B15

muted

#7C7C83

Preview Lab

Preview with #1D5FC9

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

Preview Lab → · Contrast checker → · Palette generator →