#42659B#42659B

#42659B is a mid, moderate blue. Relative luminance 0.128; OKLCH L 50.5% C 0.096 H 258.8°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#42659B
RGB	rgb(66, 101, 155)
HSL	hsl(216, 40%, 43%)
HSV	hsv(216, 57%, 61%)
CMYK	cmyk(57.4%, 34.8%, 0%, 39.2%)
CIE-LAB	lab(42.51, 4.20, -33.20)
CIE-LCH	lch(42.51, 33.47, 277.21°)
OKLab	oklab(50.55% -0.0186 -0.0938)
OKLCH	oklch(50.55% 0.096 258.8)
XYZ	xyz(12.8148, 12.8311, 32.8053)
Luminance	0.1283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42659B #9B7842

analogous

#42919B #42659B #4B429B

triadic

#42659B #9B4265 #659B42

tetradic

#42659B #9B4291 #9B7842 #429B4B

square

#42659B #9B4291 #9B7842 #429B4B

split-complementary

#42659B #9B4B42 #919B42

monochromatic

#1D2D45 #304970 #42659B #5F83BB #8AA5CD

Accessibility & contrast

On white

5.89

#42659B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#42659B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42659B

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42659B	#FFFFFF	#000000	##FFFFFF
##42659B	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F699D

Deuteranopia (green-blind)

#44619A

Tritanopia (blue-blind)

#007179

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #42659b;
/* rgb */ color: rgb(66, 101, 155);
/* oklch */ color: oklch(50.5% 0.096 258.8);

Tailwind

colors: {
  custom: {
    50: '#7d90b9',
    500: '#42659b',
    950: '#000000',
  },
}

SCSS

$custom: #42659b;
$custom-light: #7d90b9;
$custom-dark: #000000;

JSON

{
  "hex": "#42659b",
  "rgb": {
    "r": 66,
    "g": 101,
    "b": 155
  },
  "hsl": {
    "h": 216.404,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50546,
    "c": 0.09561,
    "h": 258.8
  },
  "luminance": 0.12832
}

Semantic roles & 50–950 ramp

primary

#42659B

secondary

#B8A281

accent

#A158D0

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #42659B

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

Preview Lab → · Contrast checker → · Palette generator →