#677DDD#677DDD

#677DDD is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.8% C 0.147 H 271.8°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#677DDD
RGB	rgb(103, 125, 221)
HSL	hsl(229, 63%, 64%)
HSV	hsv(229, 53%, 87%)
CMYK	cmyk(53.4%, 43.4%, 0%, 13.3%)
CIE-LAB	lab(54.83, 19.15, -51.64)
CIE-LCH	lch(54.83, 55.08, 290.34°)
OKLab	oklab(61.77% 0.0046 -0.1468)
OKLCH	oklch(61.77% 0.147 271.8)
XYZ	xyz(25.9740, 22.7695, 71.4188)
Luminance	0.2277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#677DDD #DDC767

analogous

#67B8DD #677DDD #8C67DD

triadic

#677DDD #DD677D #7DDD67

tetradic

#677DDD #DD67B8 #DDC767 #67DD8C

square

#677DDD #DD67B8 #DDC767 #67DD8C

split-complementary

#677DDD #DD8C67 #B8DD67

monochromatic

#253DA5 #3552D2 #677DDD #99A8E8 #CBD3F3

Accessibility & contrast

On white

3.78

#677DDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#677DDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #677DDD

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##677DDD	#FFFFFF	#000000	##000000
##677DDD	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5489E1

Deuteranopia (green-blind)

#467EDB

Tritanopia (blue-blind)

#2C92A2

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #677ddd;
/* rgb */ color: rgb(103, 125, 221);
/* oklch */ color: oklch(61.8% 0.147 271.8);

Tailwind

colors: {
  custom: {
    50: '#9aa2e8',
    500: '#677ddd',
    950: '#000000',
  },
}

SCSS

$custom: #677ddd;
$custom-light: #9aa2e8;
$custom-dark: #000000;

JSON

{
  "hex": "#677ddd",
  "rgb": {
    "r": 103,
    "g": 125,
    "b": 221
  },
  "hsl": {
    "h": 228.814,
    "s": 63.441,
    "l": 63.529
  },
  "oklch": {
    "l": 0.61768,
    "c": 0.14686,
    "h": 271.8
  },
  "luminance": 0.22771
}

Semantic roles & 50–950 ramp

primary

#677DDD

secondary

#E5DDBB

accent

#AA1ACB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0F16

muted

#7E7E84

Preview Lab

Preview with #677DDD

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

Preview Lab → · Contrast checker → · Palette generator →