#377EA9#377EA9

#377EA9 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.7% C 0.097 H 238.5°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#377EA9
RGB	rgb(55, 126, 169)
HSL	hsl(203, 51%, 44%)
HSV	hsv(203, 67%, 66%)
CMYK	cmyk(67.5%, 25.4%, 0%, 33.7%)
CIE-LAB	lab(50.21, -8.20, -29.40)
CIE-LCH	lch(50.21, 30.52, 254.41°)
OKLab	oklab(56.7% -0.0508 -0.0827)
OKLCH	oklch(56.7% 0.097 238.5)
XYZ	xyz(16.1951, 18.5968, 40.2645)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EA9 #A96237

analogous

#37A99B #377EA9 #3745A9

triadic

#377EA9 #A9377E #7EA937

tetradic

#377EA9 #9B37A9 #A96237 #45A937

square

#377EA9 #9B37A9 #A96237 #45A937

split-complementary

#377EA9 #A93745 #A99B37

monochromatic

#19394D #285C7B #377EA9 #559DC8 #84B7D7

Accessibility & contrast

On white

4.45

#377EA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#377EA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EA9

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EA9	#FFFFFF	#000000	##000000
##377EA9	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7EAB

Deuteranopia (green-blind)

#5A72A8

Tritanopia (blue-blind)

#00898D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377ea9;
/* rgb */ color: rgb(55, 126, 169);
/* oklch */ color: oklch(56.7% 0.097 238.5);

Tailwind

colors: {
  custom: {
    50: '#7ba3c2',
    500: '#377ea9',
    950: '#000000',
  },
}

SCSS

$custom: #377ea9;
$custom-light: #7ba3c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ea9",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 169
  },
  "hsl": {
    "h": 202.632,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56699,
    "c": 0.09702,
    "h": 238.5
  },
  "luminance": 0.18599
}

Semantic roles & 50–950 ramp

primary

#377EA9

secondary

#C0957B

accent

#834DDA

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #377EA9

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

Preview Lab → · Contrast checker → · Palette generator →