#1E59B3#1E59B3

#1E59B3 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 47.9% C 0.156 H 259.1°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#1E59B3
RGB	rgb(30, 89, 179)
HSL	hsl(216, 71%, 41%)
HSV	hsv(216, 83%, 70%)
CMYK	cmyk(83.2%, 50.3%, 0%, 29.8%)
CIE-LAB	lab(39.03, 15.32, -53.05)
CIE-LCH	lch(39.03, 55.22, 286.11°)
OKLab	oklab(47.93% -0.0293 -0.1528)
OKLCH	oklch(47.93% 0.156 259.1)
XYZ	xyz(12.2415, 10.6739, 44.0542)
Luminance	0.1067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E59B3 #B3781E

analogous

#1EA3B3 #1E59B3 #2E1EB3

triadic

#1E59B3 #B31E59 #59B31E

tetradic

#1E59B3 #B31EA3 #B3781E #1EB32E

square

#1E59B3 #B31EA3 #B3781E #1EB32E

split-complementary

#1E59B3 #B32E1E #A3B31E

monochromatic

#0C254A #153F7F #1E59B3 #3275DD #6698E5

Accessibility & contrast

On white

6.70

#1E59B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#1E59B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1E59B3

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E59B3	#FFFFFF	#000000	##FFFFFF
##1E59B3	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2063B6

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#006F7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1e59b3;
/* rgb */ color: rgb(30, 89, 179);
/* oklch */ color: oklch(47.9% 0.156 259.1);

Tailwind

colors: {
  custom: {
    50: '#7487ca',
    500: '#1e59b3',
    950: '#000000',
  },
}

SCSS

$custom: #1e59b3;
$custom-light: #7487ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1e59b3",
  "rgb": {
    "r": 30,
    "g": 89,
    "b": 179
  },
  "hsl": {
    "h": 216.242,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.47925,
    "c": 0.15556,
    "h": 259.1
  },
  "luminance": 0.10675
}

Semantic roles & 50–950 ramp

primary

#1E59B3

secondary

#CBA162

accent

#A73AEE

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1E59B3

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

Preview Lab → · Contrast checker → · Palette generator →