#3127B1#3127B1

#3127B1 is a dark, highly saturated blue. Relative luminance 0.053; OKLCH L 39.6% C 0.205 H 274.8°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#3127B1
RGB	rgb(49, 39, 177)
HSL	hsl(244, 64%, 42%)
HSV	hsv(244, 78%, 69%)
CMYK	cmyk(72.3%, 78%, 0%, 30.6%)
CIE-LAB	lab(27.51, 47.91, -70.66)
CIE-LCH	lch(27.51, 85.37, 304.14°)
OKLab	oklab(39.6% 0.0172 -0.2044)
OKLCH	oklch(39.6% 0.205 274.8)
XYZ	xyz(9.9253, 5.2774, 42.0820)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3127B1 #A7B127

analogous

#2762B1 #3127B1 #7627B1

triadic

#3127B1 #B13127 #27B131

tetradic

#3127B1 #B12762 #A7B127 #27B176

square

#3127B1 #B12762 #A7B127 #27B176

split-complementary

#3127B1 #B17627 #62B127

monochromatic

#15114D #231C7F #3127B1 #4B40D5 #7A72E0

Accessibility & contrast

On white

10.22

#3127B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#3127B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3127B1

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3127B1	#FFFFFF	#000000	##FFFFFF
##3127B1	1.00	10.22	2.06	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B5

Deuteranopia (green-blind)

#003BAF

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3127b1;
/* rgb */ color: rgb(49, 39, 177);
/* oklch */ color: oklch(39.6% 0.205 274.8);

Tailwind

colors: {
  custom: {
    50: '#7d64ca',
    500: '#3127b1',
    950: '#000000',
  },
}

SCSS

$custom: #3127b1;
$custom-light: #7d64ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3127b1",
  "rgb": {
    "r": 49,
    "g": 39,
    "b": 177
  },
  "hsl": {
    "h": 244.348,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.396,
    "c": 0.20508,
    "h": 274.8
  },
  "luminance": 0.05278
}

Semantic roles & 50–950 ramp

primary

#3127B1

secondary

#C1C76D

accent

#E741DB

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3127B1

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

Preview Lab → · Contrast checker → · Palette generator →