#273D7B#273D7B

#273D7B is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.109 H 266.5°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#273D7B
RGB	rgb(39, 61, 123)
HSL	hsl(224, 52%, 32%)
HSV	hsv(224, 68%, 48%)
CMYK	cmyk(68.3%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(27.29, 13.36, -37.93)
CIE-LCH	lch(27.29, 40.22, 289.40°)
OKLab	oklab(37.8% -0.0066 -0.1087)
OKLCH	oklch(37.8% 0.109 266.5)
XYZ	xyz(6.0794, 5.1983, 19.4180)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273D7B #7B6527

analogous

#27677B #273D7B #3B277B

triadic

#273D7B #7B273D #3D7B27

tetradic

#273D7B #7B2767 #7B6527 #277B3B

square

#273D7B #7B2767 #7B6527 #277B3B

split-complementary

#273D7B #7B3B27 #677B27

monochromatic

#0A0F1E #18264D #273D7B #3654A9 #5472C9

Accessibility & contrast

On white

10.30

#273D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#273D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273D7B

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273D7B	#FFFFFF	#000000	##FFFFFF
##273D7B	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C457D

Deuteranopia (green-blind)

#083D7A

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #273d7b;
/* rgb */ color: rgb(39, 61, 123);
/* oklch */ color: oklch(37.8% 0.109 266.5);

Tailwind

colors: {
  custom: {
    50: '#6b72a2',
    500: '#273d7b',
    950: '#000000',
  },
}

SCSS

$custom: #273d7b;
$custom-light: #6b72a2;
$custom-dark: #000000;

JSON

{
  "hex": "#273d7b",
  "rgb": {
    "r": 39,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 224.286,
    "s": 51.852,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37797,
    "c": 0.10886,
    "h": 266.5
  },
  "luminance": 0.05199
}

Semantic roles & 50–950 ramp

primary

#273D7B

secondary

#AD9551

accent

#B64CDB

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #273D7B

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

Preview Lab → · Contrast checker → · Palette generator →