#2A3757#2A3757

#2A3757 is a dark, muted blue. Relative luminance 0.039; OKLCH L 34.1% C 0.059 H 266.5°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#2A3757
RGB	rgb(42, 55, 87)
HSL	hsl(223, 35%, 25%)
HSV	hsv(223, 52%, 34%)
CMYK	cmyk(51.7%, 36.8%, 0%, 65.9%)
CIE-LAB	lab(23.38, 4.77, -20.99)
CIE-LCH	lch(23.38, 21.52, 282.79°)
OKLab	oklab(34.11% -0.0036 -0.059)
OKLCH	oklch(34.11% 0.059 266.5)
XYZ	xyz(4.0408, 3.9125, 9.5572)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3757 #574A2A

analogous

#2A4D57 #2A3757 #332A57

triadic

#2A3757 #572A37 #37572A

tetradic

#2A3757 #572A4D #574A2A #2A5733

square

#2A3757 #572A4D #574A2A #2A5733

split-complementary

#2A3757 #57332A #4D572A

monochromatic

#0A0D15 #161D2E #2A3757 #3E5180 #526BAA

Accessibility & contrast

On white

11.78

#2A3757 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#2A3757 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3757

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3757	#FFFFFF	#000000	##FFFFFF
##2A3757	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3A58

Deuteranopia (green-blind)

#263656

Tritanopia (blue-blind)

#183E43

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #2a3757;
/* rgb */ color: rgb(42, 55, 87);
/* oklch */ color: oklch(34.1% 0.059 266.5);

Tailwind

colors: {
  custom: {
    50: '#666d86',
    500: '#2a3757',
    950: '#000000',
  },
}

SCSS

$custom: #2a3757;
$custom-light: #666d86;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3757",
  "rgb": {
    "r": 42,
    "g": 55,
    "b": 87
  },
  "hsl": {
    "h": 222.667,
    "s": 34.884,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34108,
    "c": 0.05914,
    "h": 266.5
  },
  "luminance": 0.03913
}

Semantic roles & 50–950 ramp

primary

#2A3757

secondary

#897A53

accent

#AB5DCB

background

#F6F6F8

surface

#EBEBEF

border

#C6C6CA

text

#06070B

muted

#7A7A7C

Preview Lab

Preview with #2A3757

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

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