#1D58B3#1D58B3

#1D58B3 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.7% C 0.157 H 259.3°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#1D58B3
RGB	rgb(29, 88, 179)
HSL	hsl(216, 72%, 41%)
HSV	hsv(216, 84%, 70%)
CMYK	cmyk(83.8%, 50.8%, 0%, 29.8%)
CIE-LAB	lab(38.71, 15.90, -53.56)
CIE-LCH	lch(38.71, 55.87, 286.53°)
OKLab	oklab(47.68% -0.0291 -0.1543)
OKLCH	oklch(47.68% 0.157 259.3)
XYZ	xyz(12.1301, 10.4938, 44.0253)
Luminance	0.1050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D58B3 #B3781D

analogous

#1DA3B3 #1D58B3 #2D1DB3

triadic

#1D58B3 #B31D58 #58B31D

tetradic

#1D58B3 #B31DA3 #B3781D #1DB32D

square

#1D58B3 #B31DA3 #B3781D #1DB32D

split-complementary

#1D58B3 #B32D1D #A3B31D

monochromatic

#0C244A #143E7E #1D58B3 #3074DD #6497E6

Accessibility & contrast

On white

6.78

#1D58B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#1D58B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D58B3

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D58B3	#FFFFFF	#000000	##FFFFFF
##1D58B3	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D62B6

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1d58b3;
/* rgb */ color: rgb(29, 88, 179);
/* oklch */ color: oklch(47.7% 0.157 259.3);

Tailwind

colors: {
  custom: {
    50: '#7486ca',
    500: '#1d58b3',
    950: '#000000',
  },
}

SCSS

$custom: #1d58b3;
$custom-light: #7486ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1d58b3",
  "rgb": {
    "r": 29,
    "g": 88,
    "b": 179
  },
  "hsl": {
    "h": 216.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.47679,
    "c": 0.157,
    "h": 259.3
  },
  "luminance": 0.10495
}

Semantic roles & 50–950 ramp

primary

#1D58B3

secondary

#CBA161

accent

#A739EF

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1D58B3

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

Preview Lab → · Contrast checker → · Palette generator →