#037166
Closest named color: Dark Aquamarine (#017371). oklch(49.3% 0.087 183.2), rgb(3, 113, 102).
Aa
White text reads best on this color (5.90:1).
About this color
#037166 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 49%, its chroma 0.087 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.017 away. White text reads best on it, at 5.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #037166 |
| RGB | rgb(3, 113, 102) |
| HSL | hsl(174, 95%, 23%) |
| OKLCH | oklch(49.3% 0.087 183.2) |
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 #037166 | 5.90:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #037166 | 3.55:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #037166 text on white | 5.90:1 | AA | Lc 79.0 | Fine for body text |
| #037166 text on black | 3.55:1 | AA large text | Lc -22.8 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#C9DEDA
oklch(88.4% 0.023 183.1)
-
Step 300
300
#A3CAC3
oklch(80.9% 0.043 183.1)
-
Step 400
400
#6FAFA5
oklch(70.8% 0.068 183.4)
-
Step 500
500
#439A8E
oklch(63% 0.086 183.2)
-
Step 600
600
#178579
oklch(55.6% 0.094 183.5)
-
Step 700
700 (this color)
#037166
oklch(49.3% 0.087 183.2)
-
Step 800
800
#0C5C53
oklch(42.8% 0.072 183)
-
Step 900
900
#174B44
oklch(37.6% 0.056 182.8)
-
Step 950
950
#0F2C28
oklch(27% 0.036 183.4)
#037166 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) | #6B6A66 | 0.092 |
| Deuteranopia (no green cones) | #5E6067 | 0.088 |
| Tritanopia (no blue cones) | #00746E | 0.014 |
| Achromatopsia (no color) | #646464 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #037166
#037166
oklch(49.3% 0.087 183.2)
- #8A4B5C
#8A4B5C
oklch(49.3% 0.087 3.5)
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 #037166, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.017
- Deep Turquoise #017374 ΔE 0.022
- Dark Aqua #05696B ΔE 0.030
- Bluegreen #017A79 ΔE 0.035
- Deep Aqua #08787F ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.043
- Teal #008080 ΔE 0.054
- Petrol #005F6A ΔE 0.061
Use #037166 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.