#1B456B#1B456B

#1B456B is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.1% C 0.080 H 248.8°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B456B
RGB	rgb(27, 69, 107)
HSL	hsl(209, 60%, 26%)
HSV	hsv(209, 75%, 42%)
CMYK	cmyk(74.8%, 35.5%, 0%, 58%)
CIE-LAB	lab(28.25, -0.51, -26.32)
CIE-LCH	lch(28.25, 26.32, 268.89°)
OKLab	oklab(38.06% -0.029 -0.0747)
OKLCH	oklch(38.06% 0.08 248.8)
XYZ	xyz(5.2330, 5.5502, 14.7026)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B456B #6B411B

analogous

#1B6B69 #1B456B #1B1D6B

triadic

#1B456B #6B1B45 #456B1B

tetradic

#1B456B #691B6B #6B411B #1D6B1B

square

#1B456B #691B6B #6B411B #1D6B1B

split-complementary

#1B456B #6B1B1D #6B691B

monochromatic

#061018 #0F253A #1B456B #27659C #3584CC

Accessibility & contrast

On white

9.95

#1B456B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B456B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B456B

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B456B	#FFFFFF	#000000	##FFFFFF
##1B456B	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34476D

Deuteranopia (green-blind)

#293F6A

Tritanopia (blue-blind)

#004E53

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b456b;
/* rgb */ color: rgb(27, 69, 107);
/* oklch */ color: oklch(38.1% 0.080 248.8);

Tailwind

colors: {
  custom: {
    50: '#637895',
    500: '#1b456b',
    950: '#000000',
  },
}

SCSS

$custom: #1b456b;
$custom-light: #637895;
$custom-dark: #000000;

JSON

{
  "hex": "#1b456b",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 107
  },
  "hsl": {
    "h": 208.5,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.38064,
    "c": 0.08009,
    "h": 248.8
  },
  "luminance": 0.05551
}

Semantic roles & 50–950 ramp

primary

#1B456B

secondary

#A06F42

accent

#9045E3

background

#F6F7F9

surface

#EBEDF1

border

#C6C8CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1B456B

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

Preview Lab → · Contrast checker → · Palette generator →