#3127B4#3127B4

#3127B4 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 39.9% C 0.209 H 274.5°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#3127B4
RGB	rgb(49, 39, 180)
HSL	hsl(244, 64%, 43%)
HSV	hsv(244, 78%, 71%)
CMYK	cmyk(72.8%, 78.3%, 0%, 29.4%)
CIE-LAB	lab(27.84, 48.85, -71.91)
CIE-LCH	lch(27.84, 86.93, 304.19°)
OKLab	oklab(39.93% 0.0165 -0.208)
OKLCH	oklch(39.93% 0.209 274.5)
XYZ	xyz(10.2276, 5.3983, 43.6741)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3127B4 #AAB427

analogous

#2764B4 #3127B4 #7727B4

triadic

#3127B4 #B43127 #27B431

tetradic

#3127B4 #B42764 #AAB427 #27B477

square

#3127B4 #B42764 #AAB427 #27B477

split-complementary

#3127B4 #B47727 #64B427

monochromatic

#16114F #231C82 #3127B4 #4D42D6 #7C74E1

Accessibility & contrast

On white

10.10

#3127B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3127B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3127B4

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3127B4	#FFFFFF	#000000	##FFFFFF
##3127B4	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B8

Deuteranopia (green-blind)

#003BB2

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3127b4;
/* rgb */ color: rgb(49, 39, 180);
/* oklch */ color: oklch(39.9% 0.209 274.5);

Tailwind

colors: {
  custom: {
    50: '#7e64cc',
    500: '#3127b4',
    950: '#000000',
  },
}

SCSS

$custom: #3127b4;
$custom-light: #7e64cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3127b4",
  "rgb": {
    "r": 49,
    "g": 39,
    "b": 180
  },
  "hsl": {
    "h": 244.255,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.39928,
    "c": 0.20863,
    "h": 274.5
  },
  "luminance": 0.05399
}

Semantic roles & 50–950 ramp

primary

#3127B4

secondary

#C2C86F

accent

#E740DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3127B4

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

Preview Lab → · Contrast checker → · Palette generator →