#311EA0#311EA0

#311EA0 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.6% C 0.193 H 277.7°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#311EA0
RGB	rgb(49, 30, 160)
HSL	hsl(249, 68%, 37%)
HSV	hsv(249, 81%, 63%)
CMYK	cmyk(69.4%, 81.3%, 0%, 37.3%)
CIE-LAB	lab(24.06, 47.12, -66.11)
CIE-LCH	lch(24.06, 81.18, 305.48°)
OKLab	oklab(36.64% 0.0257 -0.191)
OKLCH	oklch(36.64% 0.193 277.7)
XYZ	xyz(8.0740, 4.1189, 33.6204)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311EA0 #8DA01E

analogous

#1E4CA0 #311EA0 #721EA0

triadic

#311EA0 #A0311E #1EA031

tetradic

#311EA0 #A01E4C #8DA01E #1EA072

square

#311EA0 #A01E4C #8DA01E #1EA072

split-complementary

#311EA0 #A0721E #4CA01E

monochromatic

#110B39 #21146C #311EA0 #4128D4 #6C59E0

Accessibility & contrast

On white

11.51

#311EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#311EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311EA0

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311EA0	#FFFFFF	#000000	##FFFFFF
##311EA0	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA4

Deuteranopia (green-blind)

#00349E

Tritanopia (blue-blind)

#004660

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #311ea0;
/* rgb */ color: rgb(49, 30, 160);
/* oklch */ color: oklch(36.6% 0.193 277.7);

Tailwind

colors: {
  custom: {
    50: '#7a5ebd',
    500: '#311ea0',
    950: '#000000',
  },
}

SCSS

$custom: #311ea0;
$custom-light: #7a5ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#311ea0",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 160
  },
  "hsl": {
    "h": 248.769,
    "s": 68.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36638,
    "c": 0.19272,
    "h": 277.7
  },
  "luminance": 0.0412
}

Semantic roles & 50–950 ramp

primary

#311EA0

secondary

#B4C456

accent

#EB3DD2

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #311EA0

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

Preview Lab → · Contrast checker → · Palette generator →