#183E7E#183E7E

#183E7E is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.117 H 260.2°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#183E7E
RGB	rgb(24, 62, 126)
HSL	hsl(218, 68%, 29%)
HSV	hsv(218, 81%, 49%)
CMYK	cmyk(81%, 50.8%, 0%, 50.6%)
CIE-LAB	lab(27.14, 11.60, -40.09)
CIE-LCH	lch(27.14, 41.74, 286.14°)
OKLab	oklab(37.57% -0.0199 -0.1153)
OKLCH	oklch(37.57% 0.117 260.2)
XYZ	xyz(5.8638, 5.1451, 20.4187)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E7E #7E5818

analogous

#18717E #183E7E #25187E

triadic

#183E7E #7E183E #3E7E18

tetradic

#183E7E #7E1871 #7E5818 #187E25

square

#183E7E #7E1871 #7E5818 #187E25

split-complementary

#183E7E #7E2518 #717E18

monochromatic

#050D1A #0E254B #183E7E #2257B1 #3774D9

Accessibility & contrast

On white

10.35

#183E7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#183E7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E7E

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E7E	#FFFFFF	#000000	##FFFFFF
##183E7E	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184580

Deuteranopia (green-blind)

#003C7D

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #183e7e;
/* rgb */ color: rgb(24, 62, 126);
/* oklch */ color: oklch(37.6% 0.117 260.2);

Tailwind

colors: {
  custom: {
    50: '#6672a4',
    500: '#183e7e',
    950: '#000000',
  },
}

SCSS

$custom: #183e7e;
$custom-light: #6672a4;
$custom-dark: #000000;

JSON

{
  "hex": "#183e7e",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 126
  },
  "hsl": {
    "h": 217.647,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37569,
    "c": 0.11697,
    "h": 260.2
  },
  "luminance": 0.05146
}

Semantic roles & 50–950 ramp

primary

#183E7E

secondary

#B2883F

accent

#AA3DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #183E7E

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

Preview Lab → · Contrast checker → · Palette generator →