#123B58#123B58

#123B58 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.068 H 243.4°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#123B58
RGB	rgb(18, 59, 88)
HSL	hsl(205, 66%, 21%)
HSV	hsv(205, 80%, 35%)
CMYK	cmyk(79.5%, 33%, 0%, 65.5%)
CIE-LAB	lab(23.54, -2.92, -21.48)
CIE-LCH	lch(23.54, 21.67, 262.25°)
OKLab	oklab(33.92% -0.0304 -0.0608)
OKLCH	oklch(33.92% 0.068 243.4)
XYZ	xyz(3.5742, 3.9607, 9.8067)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B58 #582F12

analogous

#125852 #123B58 #121858

triadic

#123B58 #58123B #3B5812

tetradic

#123B58 #521258 #582F12 #185812

square

#123B58 #521258 #582F12 #185812

split-complementary

#123B58 #581218 #585212

monochromatic

#051119 #081925 #123B58 #1C5D8B #277FBE

Accessibility & contrast

On white

11.72

#123B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#123B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B58

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B58	#FFFFFF	#000000	##FFFFFF
##123B58	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3C59

Deuteranopia (green-blind)

#243557

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123b58;
/* rgb */ color: rgb(18, 59, 88);
/* oklch */ color: oklch(33.9% 0.068 243.4);

Tailwind

colors: {
  custom: {
    50: '#5b7087',
    500: '#123b58',
    950: '#000000',
  },
}

SCSS

$custom: #123b58;
$custom-light: #5b7087;
$custom-dark: #000000;

JSON

{
  "hex": "#123b58",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 88
  },
  "hsl": {
    "h": 204.857,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.33922,
    "c": 0.06799,
    "h": 243.4
  },
  "luminance": 0.03961
}

Semantic roles & 50–950 ramp

primary

#123B58

secondary

#915B35

accent

#853FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123B58

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

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