#1E288F#1E288F

#1E288F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.167 H 270.1°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#1E288F
RGB	rgb(30, 40, 143)
HSL	hsl(235, 65%, 34%)
HSV	hsv(235, 79%, 56%)
CMYK	cmyk(79%, 72%, 0%, 43.9%)
CIE-LAB	lab(22.92, 34.07, -57.58)
CIE-LCH	lch(22.92, 66.91, 300.61°)
OKLab	oklab(34.95% 0.0004 -0.1667)
OKLCH	oklch(34.95% 0.167 270.1)
XYZ	xyz(6.2504, 3.7761, 26.3807)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E288F #8F851E

analogous

#1E618F #1E288F #4D1E8F

triadic

#1E288F #8F1E28 #288F1E

tetradic

#1E288F #8F1E61 #8F851E #1E8F4D

square

#1E288F #8F1E61 #8F851E #1E8F4D

split-complementary

#1E288F #8F4D1E #618F1E

monochromatic

#090C2A #131A5C #1E288F #2936C2 #4E5ADA

Accessibility & contrast

On white

11.96

#1E288F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1E288F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E288F

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E288F	#FFFFFF	#000000	##FFFFFF
##1E288F	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C92

Deuteranopia (green-blind)

#00318D

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1e288f;
/* rgb */ color: rgb(30, 40, 143);
/* oklch */ color: oklch(34.9% 0.167 270.1);

Tailwind

colors: {
  custom: {
    50: '#6e62b1',
    500: '#1e288f',
    950: '#000000',
  },
}

SCSS

$custom: #1e288f;
$custom-light: #6e62b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1e288f",
  "rgb": {
    "r": 30,
    "g": 40,
    "b": 143
  },
  "hsl": {
    "h": 234.69,
    "s": 65.318,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3495,
    "c": 0.16673,
    "h": 270.1
  },
  "luminance": 0.03777
}

Semantic roles & 50–950 ramp

primary

#1E288F

secondary

#BCB34C

accent

#D940E8

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1E288F

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

Preview Lab → · Contrast checker → · Palette generator →