#3129B4#3129B4

#3129B4 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.2% C 0.207 H 274.3°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#3129B4
RGB	rgb(49, 41, 180)
HSL	hsl(243, 63%, 43%)
HSV	hsv(243, 77%, 71%)
CMYK	cmyk(72.8%, 77.2%, 0%, 29.4%)
CIE-LAB	lab(28.20, 47.81, -71.31)
CIE-LCH	lch(28.20, 85.86, 303.84°)
OKLab	oklab(40.18% 0.0157 -0.2063)
OKLCH	oklch(40.18% 0.207 274.3)
XYZ	xyz(10.2950, 5.5331, 43.6966)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3129B4 #ACB429

analogous

#2966B4 #3129B4 #7629B4

triadic

#3129B4 #B43129 #29B431

tetradic

#3129B4 #B42966 #ACB429 #29B476

square

#3129B4 #B42966 #ACB429 #29B476

split-complementary

#3129B4 #B47629 #66B429

monochromatic

#161250 #231E82 #3129B4 #4E45D5 #7D77E0

Accessibility & contrast

On white

9.97

#3129B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#3129B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3129B4

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3129B4	#FFFFFF	#000000	##FFFFFF
##3129B4	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00536D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3129b4;
/* rgb */ color: rgb(49, 41, 180);
/* oklch */ color: oklch(40.2% 0.207 274.3);

Tailwind

colors: {
  custom: {
    50: '#7e66cc',
    500: '#3129b4',
    950: '#000000',
  },
}

SCSS

$custom: #3129b4;
$custom-light: #7e66cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3129b4",
  "rgb": {
    "r": 49,
    "g": 41,
    "b": 180
  },
  "hsl": {
    "h": 243.453,
    "s": 62.896,
    "l": 43.333
  },
  "oklch": {
    "l": 0.40182,
    "c": 0.20686,
    "h": 274.3
  },
  "luminance": 0.05534
}

Semantic roles & 50–950 ramp

primary

#3129B4

secondary

#C3C871

accent

#E642DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3129B4

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

Preview Lab → · Contrast checker → · Palette generator →