#27666D
Closest named color: Dark Aqua (#05696B). oklch(47.3% 0.064 205.3), rgb(39, 102, 109).
Aa
White text reads best on this color (6.54:1).
About this color
#27666D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.064 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.018 away. White text reads best on it, at 6.54:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #27666D |
| RGB | rgb(39, 102, 109) |
| HSL | hsl(186, 47%, 29%) |
| OKLCH | oklch(47.3% 0.064 205.3) |
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 #27666D | 6.54:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #27666D | 3.20:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #27666D text on white | 6.54:1 | AA | Lc 82.2 | Fine for body text |
| #27666D text on black | 3.20:1 | AA large text | Lc -19.7 | 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CDDDDF
oklch(88.6% 0.017 205.8)
-
Step 300
300
#AAC7CA
oklch(80.9% 0.032 204.2)
-
Step 400
400
#7CAAB0
oklch(70.7% 0.05 206.2)
-
Step 500
500
#58959C
oklch(63.1% 0.064 205.1)
-
Step 600
600
#3B7F87
oklch(55.6% 0.069 205.6)
-
Step 700
700 (this color)
#27666D
oklch(47.3% 0.064 205.3)
-
Step 800
800
#27575D
oklch(42.6% 0.053 206.3)
-
Step 900
900
#25484C
oklch(37.7% 0.041 205.1)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#27666D 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) | #5E626D | 0.063 |
| Deuteranopia (no green cones) | #535A6D | 0.058 |
| Tritanopia (no blue cones) | #006A68 | 0.023 |
| Achromatopsia (no color) | #5D5D5D | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #27666D
#27666D
oklch(47.3% 0.064 205.3)
- #7C4D49
#7C4D49
oklch(47.3% 0.065 25.1)
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 #27666D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.018
- Petrol #005F6A ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.037
- Deep Turquoise #017374 ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.040
- Slate #516572 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.051
- Deep Aqua #08787F ΔE 0.054
Use #27666D 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.