#153B5E#153B5E

#153B5E is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.4% C 0.075 H 249.4°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#153B5E
RGB	rgb(21, 59, 94)
HSL	hsl(209, 63%, 23%)
HSV	hsv(209, 78%, 37%)
CMYK	cmyk(77.7%, 37.2%, 0%, 63.1%)
CIE-LAB	lab(23.98, 0.01, -24.70)
CIE-LCH	lch(23.98, 24.70, 270.02°)
OKLab	oklab(34.41% -0.0264 -0.0702)
OKLCH	oklch(34.41% 0.075 249.4)
XYZ	xyz(3.8928, 4.0951, 11.1728)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B5E #5E3815

analogous

#155E5C #153B5E #15175E

triadic

#153B5E #5E153B #3B5E15

tetradic

#153B5E #5C155E #5E3815 #175E15

square

#153B5E #5C155E #5E3815 #175E15

split-complementary

#153B5E #5E1517 #5E5C15

monochromatic

#061019 #0A1C2C #153B5E #205A90 #2B7AC2

Accessibility & contrast

On white

11.54

#153B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#153B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B5E

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B5E	#FFFFFF	#000000	##FFFFFF
##153B5E	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3D5F

Deuteranopia (green-blind)

#21365D

Tritanopia (blue-blind)

#004348

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #153b5e;
/* rgb */ color: rgb(21, 59, 94);
/* oklch */ color: oklch(34.4% 0.075 249.4);

Tailwind

colors: {
  custom: {
    50: '#5d708c',
    500: '#153b5e',
    950: '#000000',
  },
}

SCSS

$custom: #153b5e;
$custom-light: #5d708c;
$custom-dark: #000000;

JSON

{
  "hex": "#153b5e",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 94
  },
  "hsl": {
    "h": 208.767,
    "s": 63.478,
    "l": 22.549
  },
  "oklch": {
    "l": 0.3441,
    "c": 0.07497,
    "h": 249.4
  },
  "luminance": 0.04096
}

Semantic roles & 50–950 ramp

primary

#153B5E

secondary

#956639

accent

#9141E7

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #153B5E

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

Preview Lab → · Contrast checker → · Palette generator →