#1E31B3#1E31B3

#1E31B3 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.2% C 0.203 H 267.9°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#1E31B3
RGB	rgb(30, 49, 179)
HSL	hsl(232, 71%, 41%)
HSV	hsv(232, 83%, 70%)
CMYK	cmyk(83.2%, 72.6%, 0%, 29.8%)
CIE-LAB	lab(28.71, 41.48, -69.91)
CIE-LCH	lch(28.71, 81.29, 300.68°)
OKLab	oklab(40.24% -0.0075 -0.2026)
OKLCH	oklch(40.24% 0.203 267.9)
XYZ	xyz(9.7676, 5.7261, 43.2295)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.86

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E31B3 #B3A01E

analogous

#1E7BB3 #1E31B3 #551EB3

triadic

#1E31B3 #B31E31 #31B31E

tetradic

#1E31B3 #B31E7B #B3A01E #1EB355

square

#1E31B3 #B31E7B #B3A01E #1EB355

split-complementary

#1E31B3 #B3551E #7BB31E

monochromatic

#0C144A #15237F #1E31B3 #3247DD #6676E5

Accessibility & contrast

On white

9.79

#1E31B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1E31B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E31B3

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E31B3	#FFFFFF	#000000	##FFFFFF
##1E31B3	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB7

Deuteranopia (green-blind)

#003CB1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1e31b3;
/* rgb */ color: rgb(30, 49, 179);
/* oklch */ color: oklch(40.2% 0.203 267.9);

Tailwind

colors: {
  custom: {
    50: '#776acb',
    500: '#1e31b3',
    950: '#000000',
  },
}

SCSS

$custom: #1e31b3;
$custom-light: #776acb;
$custom-dark: #000000;

JSON

{
  "hex": "#1e31b3",
  "rgb": {
    "r": 30,
    "g": 49,
    "b": 179
  },
  "hsl": {
    "h": 232.349,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40242,
    "c": 0.20276,
    "h": 267.9
  },
  "luminance": 0.05727
}

Semantic roles & 50–950 ramp

primary

#1E31B3

secondary

#CBBD62

accent

#D73AEE

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #1E31B3

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

Preview Lab → · Contrast checker → · Palette generator →