#217451
Closest named color: Dark Aquamarine (#017371). oklch(50% 0.097 161.1), rgb(33, 116, 81).
Aa
White text reads best on this color (5.70:1).
About this color
#217451 is a medium-dark, moderately saturated green. In OKLCH its lightness is 50%, its chroma 0.097 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.051 away. White text reads best on it, at 5.70:1.
| Hue family | Greens |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.68:1 |
| White text | 5.70:1 |
Values
| HEX | #217451 |
| RGB | rgb(33, 116, 81) |
| HSL | hsl(155, 56%, 29%) |
| OKLCH | oklch(50% 0.097 161.1) |
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 #217451 | 5.70:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #217451 | 3.68:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #217451 text on white | 5.70:1 | AA | Lc 78.2 | Fine for body text |
| #217451 text on black | 3.68:1 | AA large text | Lc -23.6 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CBDFD4
oklch(88.6% 0.026 161.9)
-
Step 300
300
#A7CBB7
oklch(81% 0.048 160.8)
-
Step 400
400
#76AF92
oklch(70.6% 0.074 161.6)
-
Step 500
500
#4E9B77
oklch(63% 0.095 161.6)
-
Step 600
600
#2C865F
oklch(55.6% 0.105 161)
-
Step 700
700 (this color)
#217451
oklch(50% 0.097 161.1)
-
Step 800
800
#1C5C40
oklch(42.6% 0.08 160.9)
-
Step 900
900
#1E4C37
oklch(37.8% 0.063 161.4)
-
Step 950
950
#132C20
oklch(26.9% 0.039 161.3)
#217451 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) | #726B4F | 0.092 |
| Deuteranopia (no green cones) | #686353 | 0.091 |
| Tritanopia (no blue cones) | #00746B | 0.040 |
| Achromatopsia (no color) | #666666 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #217451
#217451
oklch(50% 0.097 161.1)
- #884C74
#884C74
oklch(50.1% 0.097 340.9)
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 #217451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.051
- Jungle Green #048243 ΔE 0.054
- Deep Turquoise #017374 ΔE 0.056
- Dark Olive Green #556B2F ΔE 0.057
- Bluegreen #017A79 ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.059
- Dark Aqua #05696B ΔE 0.063
- Dark Moss Green #606C38 ΔE 0.065
Use #217451 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.