#37866E
Closest named color: Viridian (#1E9167). oklch(56.4% 0.087 170.3), rgb(55, 134, 110).
Aa
Black text reads best on this color (4.79:1).
About this color
#37866E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.087 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.040 away. Black text reads best on it, at 4.79:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Viridian (#1E9167) |
| Black text | 4.79:1 |
| White text | 4.37:1 |
Values
| HEX | #37866E |
| RGB | rgb(55, 134, 110) |
| HSL | hsl(162, 42%, 37%) |
| OKLCH | oklch(56.4% 0.087 170.3) |
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 #37866E | 4.37:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #37866E | 4.79:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #37866E text on white | 4.37:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #37866E text on black | 4.79:1 | AA | Lc -31.6 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED7
oklch(88.5% 0.021 170.6)
-
Step 300
300
#A9C9BD
oklch(80.9% 0.038 170.6)
-
Step 400
400
#79AE9B
oklch(70.8% 0.063 170.1)
-
Step 500
500
#539982
oklch(63% 0.08 170.3)
-
Step 600
600 (this color)
#37866E
oklch(56.4% 0.087 170.3)
-
Step 700
700
#266F5A
oklch(49% 0.08 170.6)
-
Step 800
800
#215B49
oklch(42.7% 0.068 169.5)
-
Step 900
900
#214B3D
oklch(37.8% 0.053 169.2)
-
Step 950
950
#152C24
oklch(27.1% 0.033 169.4)
#37866E 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) | #827E6D | 0.088 |
| Deuteranopia (no green cones) | #777570 | 0.086 |
| Tritanopia (no blue cones) | #06877F | 0.029 |
| Achromatopsia (no color) | #797979 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37866E
#37866E
oklch(56.4% 0.087 170.3)
- #9C607C
#9C607C
oklch(56.4% 0.086 350.7)
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 #37866E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.040
- Dark Sage #598556 ΔE 0.042
- Sea Green #2E8B57 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.043
- Teal #008080 ΔE 0.044
- Dusty Teal #4C9085 ΔE 0.047
- Slate Green #658D6D ΔE 0.053
- Bluegreen #017A79 ΔE 0.053
Use #37866E 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.