#1B4B7D#1B4B7D

#1B4B7D is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.7% C 0.099 H 252.3°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B7D
RGB	rgb(27, 75, 125)
HSL	hsl(211, 64%, 30%)
HSV	hsv(211, 78%, 49%)
CMYK	cmyk(78.4%, 40%, 0%, 51%)
CIE-LAB	lab(31.22, 2.69, -32.93)
CIE-LCH	lch(31.22, 33.04, 274.67°)
OKLab	oklab(40.73% -0.03 -0.0939)
OKLCH	oklch(40.73% 0.099 252.3)
XYZ	xyz(6.6684, 6.7451, 20.3485)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B7D #7D4D1B

analogous

#1B7C7D #1B4B7D #1C1B7D

triadic

#1B4B7D #7D1B4B #4B7D1B

tetradic

#1B4B7D #7D1B7C #7D4D1B #1B7D1C

square

#1B4B7D #7D1B7C #7D4D1B #1B7D1C

split-complementary

#1B4B7D #7D1C1B #7C7D1B

monochromatic

#050F19 #102D4B #1B4B7D #2669AF #3D88D5

Accessibility & contrast

On white

8.94

#1B4B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1B4B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B7D

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B7D	#FFFFFF	#000000	##FFFFFF
##1B4B7D	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334E7F

Deuteranopia (green-blind)

#24457C

Tritanopia (blue-blind)

#00575E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4b7d;
/* rgb */ color: rgb(27, 75, 125);
/* oklch */ color: oklch(40.7% 0.099 252.3);

Tailwind

colors: {
  custom: {
    50: '#677ca3',
    500: '#1b4b7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b7d;
$custom-light: #677ca3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b7d",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 125
  },
  "hsl": {
    "h": 210.612,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.40732,
    "c": 0.0986,
    "h": 252.3
  },
  "luminance": 0.06746
}

Semantic roles & 50–950 ramp

primary

#1B4B7D

secondary

#B17B43

accent

#9640E7

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4B7D

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

Preview Lab → · Contrast checker → · Palette generator →