#283C7E#283C7E

#283C7E is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.9% C 0.114 H 267.9°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#283C7E
RGB	rgb(40, 60, 126)
HSL	hsl(226, 52%, 33%)
HSV	hsv(226, 68%, 49%)
CMYK	cmyk(68.3%, 52.4%, 0%, 50.6%)
CIE-LAB	lab(27.27, 15.38, -39.86)
CIE-LCH	lch(27.27, 42.72, 291.10°)
OKLab	oklab(37.86% -0.0042 -0.1143)
OKLCH	oklch(37.86% 0.114 267.9)
XYZ	xyz(6.2555, 5.1886, 20.4065)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C7E #7E6A28

analogous

#28677E #283C7E #3F287E

triadic

#283C7E #7E283C #3C7E28

tetradic

#283C7E #7E2867 #7E6A28 #287E3F

square

#283C7E #7E2867 #7E6A28 #287E3F

split-complementary

#283C7E #7E3F28 #677E28

monochromatic

#0B1021 #192650 #283C7E #3752AC #5771CA

Accessibility & contrast

On white

10.31

#283C7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#283C7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C7E

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C7E	#FFFFFF	#000000	##FFFFFF
##283C7E	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164580

Deuteranopia (green-blind)

#003D7D

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283c7e;
/* rgb */ color: rgb(40, 60, 126);
/* oklch */ color: oklch(37.9% 0.114 267.9);

Tailwind

colors: {
  custom: {
    50: '#6c71a4',
    500: '#283c7e',
    950: '#000000',
  },
}

SCSS

$custom: #283c7e;
$custom-light: #6c71a4;
$custom-dark: #000000;

JSON

{
  "hex": "#283c7e",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 126
  },
  "hsl": {
    "h": 226.047,
    "s": 51.807,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37859,
    "c": 0.1144,
    "h": 267.9
  },
  "luminance": 0.05189
}

Semantic roles & 50–950 ramp

primary

#283C7E

secondary

#AF9953

accent

#BA4DDB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #283C7E

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

Preview Lab → · Contrast checker → · Palette generator →