#42507B#42507B

#42507B is a dark, moderate blue. Relative luminance 0.083; OKLCH L 43.9% C 0.073 H 269.5°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#42507B
RGB	rgb(66, 80, 123)
HSL	hsl(225, 30%, 37%)
HSV	hsv(225, 46%, 48%)
CMYK	cmyk(46.3%, 35%, 0%, 51.8%)
CIE-LAB	lab(34.65, 6.92, -26.14)
CIE-LCH	lch(34.65, 27.04, 284.83°)
OKLab	oklab(43.91% -0.0006 -0.0734)
OKLCH	oklch(43.91% 0.073 269.5)
XYZ	xyz(8.6895, 8.3252, 19.8841)
Luminance	0.0833 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42507B #7B6D42

analogous

#426D7B #42507B #51427B

triadic

#42507B #7B4250 #507B42

tetradic

#42507B #7B426D #7B6D42 #427B51

square

#42507B #7B426D #7B6D42 #427B51

split-complementary

#42507B #7B5142 #6D7B42

monochromatic

#171C2B #2D3653 #42507B #576AA3 #7E8CBA

Accessibility & contrast

On white

7.88

#42507B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#42507B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42507B

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42507B	#FFFFFF	#000000	##FFFFFF
##42507B	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41547D

Deuteranopia (green-blind)

#3B4F7A

Tritanopia (blue-blind)

#2E5960

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42507b;
/* rgb */ color: rgb(66, 80, 123);
/* oklch */ color: oklch(43.9% 0.073 269.5);

Tailwind

colors: {
  custom: {
    50: '#7980a1',
    500: '#42507b',
    950: '#000000',
  },
}

SCSS

$custom: #42507b;
$custom-light: #7980a1;
$custom-dark: #000000;

JSON

{
  "hex": "#42507b",
  "rgb": {
    "r": 66,
    "g": 80,
    "b": 123
  },
  "hsl": {
    "h": 225.263,
    "s": 30.159,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43907,
    "c": 0.07339,
    "h": 269.5
  },
  "luminance": 0.08326
}

Semantic roles & 50–950 ramp

primary

#42507B

secondary

#A59974

accent

#AE61C6

background

#F7F7F9

surface

#EEEEF2

border

#C9C9CC

text

#090A0F

muted

#7B7C7E

Preview Lab

Preview with #42507B

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

Preview Lab → · Contrast checker → · Palette generator →