#1B6873
Closest named color: Dark Aqua (#05696B). oklch(47.7% 0.073 209), rgb(27, 104, 115).
Aa
White text reads best on this color (6.41:1).
About this color
#1B6873 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.073 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.017 away. White text reads best on it, at 6.41:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #1B6873 |
| RGB | rgb(27, 104, 115) |
| HSL | hsl(188, 62%, 28%) |
| OKLCH | oklch(47.7% 0.073 209) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1B6873 | 6.41:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #1B6873 | 3.27:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #1B6873 text on white | 6.41:1 | AA | Lc 81.5 | Fine for body text |
| #1B6873 text on black | 3.27:1 | AA large text | Lc -20.3 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CD
oklch(80.8% 0.035 210.2)
-
Step 400
400
#76ABB4
oklch(70.7% 0.057 209.2)
-
Step 500
500
#5096A1
oklch(63.2% 0.072 208.7)
-
Step 600
600
#2F808C
oklch(55.6% 0.079 208.8)
-
Step 700
700 (this color)
#1B6873
oklch(47.7% 0.073 209)
-
Step 800
800
#1E5861
oklch(42.7% 0.061 209.4)
-
Step 900
900
#1F494F
oklch(37.8% 0.048 207.8)
-
Step 950
950
#132B2E
oklch(27.1% 0.03 206.1)
#1B6873 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5E6474 | 0.070 |
| Deuteranopia (no green cones) | #525B73 | 0.064 |
| Tritanopia (no blue cones) | #006D6B | 0.025 |
| Achromatopsia (no color) | #5F5F5F | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B6873
#1B6873
oklch(47.7% 0.073 209)
- #814C45
#814C45
oklch(47.6% 0.073 28.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1B6873, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.017
- Petrol #005F6A ΔE 0.033
- Deep Turquoise #017374 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.044
- Deep Aqua #08787F ΔE 0.048
- Slate #516572 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.054
Use #1B6873 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.