#42738B#42738B

#42738B is a mid, moderate cyan. Relative luminance 0.153; OKLCH L 53.1% C 0.065 H 231.0°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#42738B
RGB	rgb(66, 115, 139)
HSL	hsl(200, 36%, 40%)
HSV	hsv(200, 53%, 55%)
CMYK	cmyk(52.5%, 17.3%, 0%, 45.5%)
CIE-LAB	lab(46.02, -9.47, -18.23)
CIE-LCH	lch(46.02, 20.54, 242.55°)
OKLab	oklab(53.07% -0.041 -0.0506)
OKLCH	oklch(53.07% 0.065 231)
XYZ	xyz(13.0360, 15.2827, 26.6840)
Luminance	0.1528 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42738B #8B5A42

analogous

#428B7E #42738B #424E8B

triadic

#42738B #8B4273 #738B42

tetradic

#42738B #7E428B #8B5A42 #4E8B42

square

#42738B #7E428B #8B5A42 #4E8B42

split-complementary

#42738B #8B424E #8B7E42

monochromatic

#1B2E38 #2E5162 #42738B #5A94B1 #83AFC4

Accessibility & contrast

On white

5.18

#42738B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#42738B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #42738B

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42738B	#FFFFFF	#000000	##FFFFFF
##42738B	1.00	5.18	4.06	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#67718C

Deuteranopia (green-blind)

#5D6A8B

Tritanopia (blue-blind)

#187A7B

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #42738b;
/* rgb */ color: rgb(66, 115, 139);
/* oklch */ color: oklch(53.1% 0.065 231.0);

Tailwind

colors: {
  custom: {
    50: '#7c9bad',
    500: '#42738b',
    950: '#000000',
  },
}

SCSS

$custom: #42738b;
$custom-light: #7c9bad;
$custom-dark: #000000;

JSON

{
  "hex": "#42738b",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 139
  },
  "hsl": {
    "h": 199.726,
    "s": 35.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.53073,
    "c": 0.06513,
    "h": 231
  },
  "luminance": 0.15284
}

Semantic roles & 50–950 ramp

primary

#42738B

secondary

#AF8B7A

accent

#815CCC

background

#F7F9FA

surface

#EEF2F4

border

#C9CCCE

text

#0A0E10

muted

#7C7E7F

Preview Lab

Preview with #42738B

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

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