#37857D
Closest named color: Dark Cyan (#008B8B). oklch(56.6% 0.077 186.1), rgb(55, 133, 125).
Aa
Black text reads best on this color (4.81:1).
About this color
#37857D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.077 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.027 away. Black text reads best on it, at 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #37857D |
| RGB | rgb(55, 133, 125) |
| HSL | hsl(174, 41%, 37%) |
| OKLCH | oklch(56.6% 0.077 186.1) |
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 #37857D | 4.36:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #37857D | 4.81:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #37857D text on white | 4.36:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #37857D text on black | 4.81:1 | AA | Lc -31.7 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDB
oklch(88.4% 0.018 188.3)
-
Step 300
300
#A8C8C4
oklch(80.8% 0.035 187.3)
-
Step 400
400
#78ACA6
oklch(70.6% 0.056 187)
-
Step 500
500
#539890
oklch(63.2% 0.071 185.9)
-
Step 600
600 (this color)
#37857D
oklch(56.6% 0.077 186.1)
-
Step 700
700
#256E67
oklch(49.1% 0.072 186.2)
-
Step 800
800
#215A54
oklch(42.8% 0.06 185.7)
-
Step 900
900
#214A45
oklch(37.8% 0.047 185)
-
Step 950
950
#142B29
oklch(26.9% 0.029 188.3)
#37857D 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) | #7F7E7D | 0.083 |
| Deuteranopia (no green cones) | #72757E | 0.077 |
| Tritanopia (no blue cones) | #008882 | 0.021 |
| Achromatopsia (no color) | #797979 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37857D
#37857D
oklch(56.6% 0.077 186.1)
- #9D636F
#9D636F
oklch(56.6% 0.077 6.3)
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 #37857D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.027
- Teal #008080 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.040
- Bluegreen #017A79 ΔE 0.045
- Teal Green #0A9396 ΔE 0.047
- Deep Aqua #08787F ΔE 0.051
- Teal Blue #01889F ΔE 0.052
- Ocean #017B92 ΔE 0.057
Use #37857D 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.