#3129B3#3129B3

#3129B3 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.1% C 0.206 H 274.4°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#3129B3
RGB	rgb(49, 41, 179)
HSL	hsl(243, 63%, 43%)
HSV	hsv(243, 77%, 70%)
CMYK	cmyk(72.6%, 77.1%, 0%, 29.8%)
CIE-LAB	lab(28.09, 47.49, -70.89)
CIE-LCH	lch(28.09, 85.33, 303.82°)
OKLab	oklab(40.07% 0.0159 -0.205)
OKLCH	oklch(40.07% 0.206 274.4)
XYZ	xyz(10.1935, 5.4925, 43.1620)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3129B3 #ABB329

analogous

#2966B3 #3129B3 #7629B3

triadic

#3129B3 #B33129 #29B331

tetradic

#3129B3 #B32966 #ABB329 #29B376

square

#3129B3 #B32966 #ABB329 #29B376

split-complementary

#3129B3 #B37629 #66B329

monochromatic

#16124F #231E81 #3129B3 #4D45D4 #7D77E0

Accessibility & contrast

On white

10.01

#3129B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3129B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3129B3

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3129B3	#FFFFFF	#000000	##FFFFFF
##3129B3	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B7

Deuteranopia (green-blind)

#003CB1

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3129b3;
/* rgb */ color: rgb(49, 41, 179);
/* oklch */ color: oklch(40.1% 0.206 274.4);

Tailwind

colors: {
  custom: {
    50: '#7e66cb',
    500: '#3129b3',
    950: '#000000',
  },
}

SCSS

$custom: #3129b3;
$custom-light: #7e66cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3129b3",
  "rgb": {
    "r": 49,
    "g": 41,
    "b": 179
  },
  "hsl": {
    "h": 243.478,
    "s": 62.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40074,
    "c": 0.20566,
    "h": 274.4
  },
  "luminance": 0.05494
}

Semantic roles & 50–950 ramp

primary

#3129B3

secondary

#C2C770

accent

#E642DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3129B3

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

Preview Lab → · Contrast checker → · Palette generator →