#1E59BB#1E59BB

#1E59BB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.5% C 0.166 H 260.2°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#1E59BB
RGB	rgb(30, 89, 187)
HSL	hsl(217, 72%, 43%)
HSV	hsv(217, 84%, 73%)
CMYK	cmyk(84%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(39.59, 18.48, -56.83)
CIE-LCH	lch(39.59, 59.76, 288.02°)
OKLab	oklab(48.54% -0.0283 -0.1639)
OKLCH	oklch(48.54% 0.166 260.2)
XYZ	xyz(13.0742, 11.0070, 48.4396)
Luminance	0.1101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E59BB #BB801E

analogous

#1EA8BB #1E59BB #311EBB

triadic

#1E59BB #BB1E59 #59BB1E

tetradic

#1E59BB #BB1EA8 #BB801E #1EBB31

square

#1E59BB #BB1EA8 #BB801E #1EBB31

split-complementary

#1E59BB #BB311E #A8BB1E

monochromatic

#0D2752 #164086 #1E59BB #3776DF #6C9AE7

Accessibility & contrast

On white

6.56

#1E59BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#1E59BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1E59BB

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E59BB	#FFFFFF	#000000	##FFFFFF
##1E59BB	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1065BE

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1e59bb;
/* rgb */ color: rgb(30, 89, 187);
/* oklch */ color: oklch(48.5% 0.166 260.2);

Tailwind

colors: {
  custom: {
    50: '#7687d0',
    500: '#1e59bb',
    950: '#000000',
  },
}

SCSS

$custom: #1e59bb;
$custom-light: #7687d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1e59bb",
  "rgb": {
    "r": 30,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 217.452,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.48538,
    "c": 0.1663,
    "h": 260.2
  },
  "luminance": 0.11009
}

Semantic roles & 50–950 ramp

primary

#1E59BB

secondary

#CDA767

accent

#AB39EF

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #1E59BB

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

Preview Lab → · Contrast checker → · Palette generator →