#37675C
Closest named color: Dark Green Blue (#1F6357). oklch(47.6% 0.056 177.2), rgb(55, 103, 92).
Aa
White text reads best on this color (6.44:1).
About this color
#37675C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.056 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.027 away. White text reads best on it, at 6.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #37675C |
| RGB | rgb(55, 103, 92) |
| HSL | hsl(166, 30%, 31%) |
| OKLCH | oklch(47.6% 0.056 177.2) |
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 #37675C | 6.44:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #37675C | 3.25:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #37675C text on white | 6.44:1 | AA | Lc 81.9 | Fine for body text |
| #37675C text on black | 3.25:1 | AA large text | Lc -20.0 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDDD9
oklch(88.6% 0.016 177)
-
Step 300
300
#AFC7C0
oklch(81% 0.028 176.2)
-
Step 400
400
#84AAA0
oklch(70.7% 0.044 177.1)
-
Step 500
500
#659589
oklch(63.2% 0.055 177.1)
-
Step 600
600
#4A7F73
oklch(55.6% 0.06 177.8)
-
Step 700
700 (this color)
#37675C
oklch(47.6% 0.056 177.2)
-
Step 800
800
#31574F
oklch(42.6% 0.046 179)
-
Step 900
900
#2C4841
oklch(37.7% 0.036 176.7)
-
Step 950
950
#1A2A26
oklch(26.9% 0.023 177.2)
#37675C 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) | #64625C | 0.059 |
| Deuteranopia (no green cones) | #5C5C5D | 0.056 |
| Tritanopia (no blue cones) | #256864 | 0.017 |
| Achromatopsia (no color) | #5E5E5E | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37675C
#37675C
oklch(47.6% 0.056 177.2)
- #774F5D
#774F5D
oklch(47.6% 0.057 356.8)
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 #37675C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.027
- Dark Aqua #05696B ΔE 0.033
- Dark Aquamarine #017371 ΔE 0.044
- Deep Turquoise #017374 ΔE 0.046
- Petrol #005F6A ΔE 0.052
- Slate #516572 ΔE 0.052
- Bluegreen #017A79 ΔE 0.062
- Deep Aqua #08787F ΔE 0.063
Use #37675C 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.