#3129B8#3129B8

#3129B8 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.6% C 0.212 H 274.0°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#3129B8
RGB	rgb(49, 41, 184)
HSL	hsl(243, 64%, 44%)
HSV	hsv(243, 78%, 72%)
CMYK	cmyk(73.4%, 77.7%, 0%, 27.8%)
CIE-LAB	lab(28.64, 49.08, -72.97)
CIE-LCH	lch(28.64, 87.94, 303.93°)
OKLab	oklab(40.62% 0.0148 -0.2111)
OKLCH	oklch(40.62% 0.212 274)
XYZ	xyz(10.7084, 5.6985, 45.8737)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3129B8 #B0B829

analogous

#2968B8 #3129B8 #7929B8

triadic

#3129B8 #B83129 #29B831

tetradic

#3129B8 #B82968 #B0B829 #29B879

square

#3129B8 #B82968 #B0B829 #29B879

split-complementary

#3129B8 #B87929 #68B829

monochromatic

#161354 #241E86 #3129B8 #5048D6 #807AE1

Accessibility & contrast

On white

9.81

#3129B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#3129B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3129B8

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3129B8	#FFFFFF	#000000	##FFFFFF
##3129B8	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABC

Deuteranopia (green-blind)

#003DB6

Tritanopia (blue-blind)

#005470

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3129b8;
/* rgb */ color: rgb(49, 41, 184);
/* oklch */ color: oklch(40.6% 0.212 274.0);

Tailwind

colors: {
  custom: {
    50: '#7f66cf',
    500: '#3129b8',
    950: '#000000',
  },
}

SCSS

$custom: #3129b8;
$custom-light: #7f66cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3129b8",
  "rgb": {
    "r": 49,
    "g": 41,
    "b": 184
  },
  "hsl": {
    "h": 243.357,
    "s": 63.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.40616,
    "c": 0.2116,
    "h": 274
  },
  "luminance": 0.057
}

Semantic roles & 50–950 ramp

primary

#3129B8

secondary

#C5C973

accent

#E741DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3129B8

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

Preview Lab → · Contrast checker → · Palette generator →