#377DDE#377DDE

#377DDE is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.5% C 0.164 H 257.4°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#377DDE
RGB	rgb(55, 125, 222)
HSL	hsl(215, 72%, 54%)
HSV	hsv(215, 75%, 87%)
CMYK	cmyk(75.2%, 43.7%, 0%, 12.9%)
CIE-LAB	lab(52.68, 11.39, -55.78)
CIE-LCH	lch(52.68, 56.93, 281.54°)
OKLab	oklab(59.53% -0.0358 -0.1598)
OKLCH	oklch(59.53% 0.164 257.4)
XYZ	xyz(22.0891, 20.7509, 71.9342)
Luminance	0.2075 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DDE #DE9837

analogous

#37D1DE #377DDE #4537DE

triadic

#377DDE #DE377D #7DDE37

tetradic

#377DDE #DE37D1 #DE9837 #37DE45

square

#377DDE #DE37D1 #DE9837 #37DE45

split-complementary

#377DDE #DE4537 #D1DE37

monochromatic

#164485 #1F5FB9 #377DDE #6C9FE7 #A0C1EF

Accessibility & contrast

On white

4.08

#377DDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#377DDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DDE

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DDE	#FFFFFF	#000000	##000000
##377DDE	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C86E2

Deuteranopia (green-blind)

#2B77DC

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377dde;
/* rgb */ color: rgb(55, 125, 222);
/* oklch */ color: oklch(59.5% 0.164 257.4);

Tailwind

colors: {
  custom: {
    50: '#84a2e9',
    500: '#377dde',
    950: '#000000',
  },
}

SCSS

$custom: #377dde;
$custom-light: #84a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#377dde",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 222
  },
  "hsl": {
    "h": 214.85,
    "s": 71.674,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59527,
    "c": 0.16373,
    "h": 257.4
  },
  "luminance": 0.20753
}

Semantic roles & 50–950 ramp

primary

#377DDE

secondary

#DCBE95

accent

#A339EE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #377DDE

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

Preview Lab → · Contrast checker → · Palette generator →