#1E3AA8#1E3AA8

#1E3AA8 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.179 H 266.6°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1E3AA8
RGB	rgb(30, 58, 168)
HSL	hsl(228, 70%, 39%)
HSV	hsv(228, 82%, 66%)
CMYK	cmyk(82.1%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(29.73, 31.73, -61.64)
CIE-LCH	lch(29.73, 69.33, 297.24°)
OKLab	oklab(40.66% -0.0105 -0.1785)
OKLCH	oklch(40.66% 0.179 266.6)
XYZ	xyz(9.1139, 6.1282, 37.7407)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3AA8 #A88C1E

analogous

#1E7FA8 #1E3AA8 #471EA8

triadic

#1E3AA8 #A81E3A #3AA81E

tetradic

#1E3AA8 #A81E7F #A88C1E #1EA847

square

#1E3AA8 #A81E7F #A88C1E #1EA847

split-complementary

#1E3AA8 #A8471E #7FA81E

monochromatic

#0B1640 #152874 #1E3AA8 #2A4ED9 #5E79E2

Accessibility & contrast

On white

9.43

#1E3AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1E3AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3AA8

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3AA8	#FFFFFF	#000000	##FFFFFF
##1E3AA8	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1e3aa8;
/* rgb */ color: rgb(30, 58, 168);
/* oklch */ color: oklch(40.7% 0.179 266.6);

Tailwind

colors: {
  custom: {
    50: '#7370c3',
    500: '#1e3aa8',
    950: '#000000',
  },
}

SCSS

$custom: #1e3aa8;
$custom-light: #7370c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3aa8",
  "rgb": {
    "r": 30,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 227.826,
    "s": 69.697,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40658,
    "c": 0.1788,
    "h": 266.6
  },
  "luminance": 0.06129
}

Semantic roles & 50–950 ramp

primary

#1E3AA8

secondary

#C7B15B

accent

#C93BED

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1E3AA8

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

Preview Lab → · Contrast checker → · Palette generator →