#42758D#42758D

#42758D is a mid, moderate cyan. Relative luminance 0.158; OKLCH L 53.7% C 0.066 H 230.1°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#42758D
RGB	rgb(66, 117, 141)
HSL	hsl(199, 36%, 41%)
HSV	hsv(199, 53%, 55%)
CMYK	cmyk(53.2%, 17%, 0%, 44.7%)
CIE-LAB	lab(46.71, -10.00, -18.35)
CIE-LCH	lch(46.71, 20.90, 241.41°)
OKLab	oklab(53.65% -0.0427 -0.051)
OKLCH	oklch(53.65% 0.066 230.1)
XYZ	xyz(13.4140, 15.8028, 27.5375)
Luminance	0.1580 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42758D #8D5A42

analogous

#428D7F #42758D #424F8D

triadic

#42758D #8D4275 #758D42

tetradic

#42758D #7F428D #8D5A42 #4F8D42

square

#42758D #7F428D #8D5A42 #4F8D42

split-complementary

#42758D #8D424F #8D7F42

monochromatic

#1B303A #2E5263 #42758D #5A96B2 #84B0C5

Accessibility & contrast

On white

5.05

#42758D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#42758D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42758D

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42758D	#FFFFFF	#000000	##FFFFFF
##42758D	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69738E

Deuteranopia (green-blind)

#5E6B8D

Tritanopia (blue-blind)

#147C7D

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #42758d;
/* rgb */ color: rgb(66, 117, 141);
/* oklch */ color: oklch(53.7% 0.066 230.1);

Tailwind

colors: {
  custom: {
    50: '#7c9cae',
    500: '#42758d',
    950: '#000000',
  },
}

SCSS

$custom: #42758d;
$custom-light: #7c9cae;
$custom-dark: #000000;

JSON

{
  "hex": "#42758d",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 141
  },
  "hsl": {
    "h": 199.2,
    "s": 36.232,
    "l": 40.588
  },
  "oklch": {
    "l": 0.53652,
    "c": 0.06648,
    "h": 230.1
  },
  "luminance": 0.15804
}

Semantic roles & 50–950 ramp

primary

#42758D

secondary

#B08C7B

accent

#805CCC

background

#F7F9FA

surface

#EEF2F4

border

#C9CCCE

text

#0A0E10

muted

#7C7E7F

Preview Lab

Preview with #42758D

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

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