#166151
Closest named color: Dark Green Blue (#1F6357). oklch(44.4% 0.076 174.9), rgb(22, 97, 81).
Aa
White text reads best on this color (7.33:1).
About this color
#166151 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.076 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.013 away. White text reads best on it, at 7.33:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.86:1 |
| White text | 7.33:1 |
Values
| HEX | #166151 |
| RGB | rgb(22, 97, 81) |
| HSL | hsl(167, 63%, 23%) |
| OKLCH | oklch(44.4% 0.076 174.9) |
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 #166151 | 7.33:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #166151 | 2.86:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #166151 text on white | 7.33:1 | AAA | Lc 85.2 | Fine for body text |
| #166151 text on black | 2.86:1 | Fails | Lc -16.9 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A4CABF
oklch(80.8% 0.043 175.7)
-
Step 400
400
#70AF9E
oklch(70.6% 0.07 175.3)
-
Step 500
500
#449B86
oklch(63% 0.09 175)
-
Step 600
600
#1A8670
oklch(55.7% 0.098 174.8)
-
Step 700
700
#05715E
oklch(49.1% 0.091 175.4)
-
Step 800
800 (this color)
#166151
oklch(44.4% 0.076 174.9)
-
Step 900
900
#174C40
oklch(37.8% 0.059 175.1)
-
Step 950
950
#102C25
oklch(26.9% 0.037 174.8)
#166151 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) | #5D5A50 | 0.079 |
| Deuteranopia (no green cones) | #535352 | 0.075 |
| Tritanopia (no blue cones) | #00625C | 0.017 |
| Achromatopsia (no color) | #565656 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166151
#166151
oklch(44.4% 0.076 174.9)
- #744156
#744156
oklch(44.4% 0.076 354.5)
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 #166151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.013
- Spruce #0A5F38 ΔE 0.039
- Pine #2B5D34 ΔE 0.041
- Dark Aqua #05696B ΔE 0.042
- Petrol #005F6A ΔE 0.044
- Deep Teal #00555A ΔE 0.049
- Dark Blue Green #005249 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.059
Use #166151 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.