#42487B#42487B

#42487B is a dark, moderate blue. Relative luminance 0.072; OKLCH L 42.1% C 0.085 H 277.0°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#42487B
RGB	rgb(66, 72, 123)
HSL	hsl(234, 30%, 37%)
HSV	hsv(234, 46%, 48%)
CMYK	cmyk(46.3%, 41.5%, 0%, 51.8%)
CIE-LAB	lab(32.31, 12.15, -29.83)
CIE-LCH	lch(32.31, 32.21, 292.16°)
OKLab	oklab(42.1% 0.0104 -0.0841)
OKLCH	oklch(42.1% 0.085 277)
XYZ	xyz(8.1382, 7.2226, 19.7003)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42487B #7B7542

analogous

#42657B #42487B #59427B

triadic

#42487B #7B4248 #487B42

tetradic

#42487B #7B4265 #7B7542 #427B59

square

#42487B #7B4265 #7B7542 #427B59

split-complementary

#42487B #7B5942 #657B42

monochromatic

#17192B #2D3153 #42487B #575FA3 #7E84BA

Accessibility & contrast

On white

8.59

#42487B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#42487B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42487B

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42487B	#FFFFFF	#000000	##FFFFFF
##42487B	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354E7D

Deuteranopia (green-blind)

#314A7A

Tritanopia (blue-blind)

#2F525B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #42487b;
/* rgb */ color: rgb(66, 72, 123);
/* oklch */ color: oklch(42.1% 0.085 277.0);

Tailwind

colors: {
  custom: {
    50: '#7a7aa1',
    500: '#42487b',
    950: '#000000',
  },
}

SCSS

$custom: #42487b;
$custom-light: #7a7aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#42487b",
  "rgb": {
    "r": 66,
    "g": 72,
    "b": 123
  },
  "hsl": {
    "h": 233.684,
    "s": 30.159,
    "l": 37.059
  },
  "oklch": {
    "l": 0.42102,
    "c": 0.08479,
    "h": 277
  },
  "luminance": 0.07223
}

Semantic roles & 50–950 ramp

primary

#42487B

secondary

#A5A074

accent

#BC61C6

background

#F7F7F9

surface

#EEEDF2

border

#C9C8CC

text

#09090F

muted

#7B7B7E

Preview Lab

Preview with #42487B

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

Preview Lab → · Contrast checker → · Palette generator →