#3127B5#3127B5

#3127B5 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 40.0% C 0.210 H 274.4°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#3127B5
RGB	rgb(49, 39, 181)
HSL	hsl(244, 65%, 43%)
HSV	hsv(244, 78%, 71%)
CMYK	cmyk(72.9%, 78.5%, 0%, 29%)
CIE-LAB	lab(27.95, 49.17, -72.32)
CIE-LCH	lch(27.95, 87.45, 304.21°)
OKLab	oklab(40.04% 0.0163 -0.2092)
OKLCH	oklch(40.04% 0.21 274.4)
XYZ	xyz(10.3299, 5.4392, 44.2126)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3127B5 #ABB527

analogous

#2764B5 #3127B5 #7827B5

triadic

#3127B5 #B53127 #27B531

tetradic

#3127B5 #B52764 #ABB527 #27B578

square

#3127B5 #B52764 #ABB527 #27B578

split-complementary

#3127B5 #B57827 #64B527

monochromatic

#161150 #231C83 #3127B5 #4D43D6 #7D75E1

Accessibility & contrast

On white

10.06

#3127B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3127B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3127B5

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3127B5	#FFFFFF	#000000	##FFFFFF
##3127B5	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B9

Deuteranopia (green-blind)

#003BB3

Tritanopia (blue-blind)

#00526E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3127b5;
/* rgb */ color: rgb(49, 39, 181);
/* oklch */ color: oklch(40.0% 0.210 274.4);

Tailwind

colors: {
  custom: {
    50: '#7e64cd',
    500: '#3127b5',
    950: '#000000',
  },
}

SCSS

$custom: #3127b5;
$custom-light: #7e64cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3127b5",
  "rgb": {
    "r": 49,
    "g": 39,
    "b": 181
  },
  "hsl": {
    "h": 244.225,
    "s": 64.545,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40038,
    "c": 0.20981,
    "h": 274.4
  },
  "luminance": 0.0544
}

Semantic roles & 50–950 ramp

primary

#3127B5

secondary

#C2C96F

accent

#E840DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3127B5

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

Preview Lab → · Contrast checker → · Palette generator →