#37664E
Closest named color: Dark Green Blue (#1F6357). oklch(46.9% 0.065 160.2), rgb(55, 102, 78).
Aa
White text reads best on this color (6.61:1).
About this color
#37664E is a medium-dark, muted green. In OKLCH its lightness is 47%, its chroma 0.065 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.027 away. White text reads best on it, at 6.61:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.065) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #37664E |
| RGB | rgb(55, 102, 78) |
| HSL | hsl(149, 30%, 31%) |
| OKLCH | oklch(46.9% 0.065 160.2) |
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 #37664E | 6.61:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #37664E | 3.17:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #37664E text on white | 6.61:1 | AA | Lc 82.6 | Fine for body text |
| #37664E text on black | 3.17:1 | AA large text | Lc -19.3 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E5ECE8
oklch(93.7% 0.009 161.3)
-
Step 200
200
#D0DDD5
oklch(88.5% 0.018 159.1)
-
Step 300
300
#B0C7BA
oklch(80.9% 0.031 160.9)
-
Step 400
400
#86AB96
oklch(70.8% 0.051 159.9)
-
Step 500
500
#66967C
oklch(63.1% 0.065 160.1)
-
Step 600
600
#4D8065
oklch(55.6% 0.07 159.9)
-
Step 700
700 (this color)
#37664E
oklch(46.9% 0.065 160.2)
-
Step 800
800
#335845
oklch(42.6% 0.053 160.6)
-
Step 900
900
#2D493A
oklch(37.8% 0.043 160)
-
Step 950
950
#1B2B22
oklch(27.2% 0.027 159.3)
#37664E 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) | #65604D | 0.062 |
| Deuteranopia (no green cones) | #5E5B4F | 0.060 |
| Tritanopia (no blue cones) | #2B665F | 0.027 |
| Achromatopsia (no color) | #5D5D5D | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37664E
#37664E
oklch(46.9% 0.065 160.2)
- #734C66
#734C66
oklch(46.9% 0.065 339.9)
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 #37664E, 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
- Pine #2B5D34 ΔE 0.046
- Dark Aqua #05696B ΔE 0.048
- Spruce #0A5F38 ΔE 0.053
- Camo Green #526525 ΔE 0.056
- Dark Aquamarine #017371 ΔE 0.057
- Dark Olive Green #556B2F ΔE 0.057
- Deep Turquoise #017374 ΔE 0.061
Use #37664E 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.