#42839B#42839B

#42839B is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 57.7% C 0.076 H 224.6°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#42839B
RGB	rgb(66, 131, 155)
HSL	hsl(196, 40%, 43%)
HSV	hsv(196, 57%, 61%)
CMYK	cmyk(57.4%, 15.5%, 0%, 39.2%)
CIE-LAB	lab(51.56, -13.54, -19.15)
CIE-LCH	lch(51.56, 23.46, 234.73°)
OKLab	oklab(57.69% -0.0539 -0.0532)
OKLCH	oklch(57.69% 0.076 224.6)
XYZ	xyz(16.2772, 19.7559, 33.9595)
Luminance	0.1976 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42839B #9B5A42

analogous

#429B86 #42839B #42569B

triadic

#42839B #9B4283 #839B42

tetradic

#42839B #86429B #9B5A42 #569B42

square

#42839B #86429B #9B5A42 #569B42

split-complementary

#42839B #9B4256 #9B8642

monochromatic

#1D3A45 #305F70 #42839B #5FA2BB #8ABBCD

Accessibility & contrast

On white

4.24

#42839B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#42839B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #42839B

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42839B	#FFFFFF	#000000	##000000
##42839B	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76809C

Deuteranopia (green-blind)

#69779B

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #42839b;
/* rgb */ color: rgb(66, 131, 155);
/* oklch */ color: oklch(57.7% 0.076 224.6);

Tailwind

colors: {
  custom: {
    50: '#7ea7b8',
    500: '#42839b',
    950: '#000000',
  },
}

SCSS

$custom: #42839b;
$custom-light: #7ea7b8;
$custom-dark: #000000;

JSON

{
  "hex": "#42839b",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 155
  },
  "hsl": {
    "h": 196.18,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.57692,
    "c": 0.07576,
    "h": 224.6
  },
  "luminance": 0.19757
}

Semantic roles & 50–950 ramp

primary

#42839B

secondary

#B89081

accent

#7858D0

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #42839B

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

Preview Lab → · Contrast checker → · Palette generator →