#5BD09E
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.7% 0.129 162.7), rgb(91, 208, 158).
Aa
Black text reads best on this color (10.96:1).
About this color
#5BD09E is a medium-light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.129 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.023 away. Black text reads best on it, at 10.96:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.96:1 |
| White text | 1.91:1 |
Values
| HEX | #5BD09E |
| RGB | rgb(91, 208, 158) |
| HSL | hsl(154, 55%, 59%) |
| OKLCH | oklch(77.7% 0.129 162.7) |
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 #5BD09E | 1.91:1 | Fails | Lc -40.6 | Non-text elements, placeholder text |
| Black text on #5BD09E | 10.96:1 | AAA | Lc 67.6 | Content text, not long reading |
| #5BD09E text on white | 1.91:1 | Fails | Lc 36.3 | Non-text elements, placeholder text |
| #5BD09E text on black | 10.96:1 | AAA | Lc -66.2 | Content text, not long reading |
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 300.
-
Step 50
50
#ECF9F2
oklch(97.1% 0.017 162.8)
-
Step 100
100
#D5F2E3
oklch(93.6% 0.036 163.2)
-
Step 200
200
#AEE9CB
oklch(88.6% 0.073 162.3)
-
Step 300
300 (this color)
#5BD09E
oklch(77.7% 0.129 162.7)
-
Step 400
400
#00BD84
oklch(70.6% 0.153 162.8)
-
Step 500
500
#00A271
oklch(63% 0.136 163)
-
Step 600
600
#00895E
oklch(55.7% 0.121 162.5)
-
Step 700
700
#00734E
oklch(49.1% 0.107 162.4)
-
Step 800
800
#005E40
oklch(42.6% 0.092 163.1)
-
Step 900
900
#004F34
oklch(37.8% 0.083 162.1)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#5BD09E 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) | #CDC29B | 0.126 |
| Deuteranopia (no green cones) | #BCB6A1 | 0.122 |
| Tritanopia (no blue cones) | #29D0C2 | 0.052 |
| Achromatopsia (no color) | #BBBBBB | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BD09E
#5BD09E
oklch(77.7% 0.129 162.7)
- #EF94CD
#EF94CD
oklch(77.7% 0.13 342.4)
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 #5BD09E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.023
- Emerald #06D6A0 ΔE 0.032
- Seafoam Blue #78D1B6 ΔE 0.044
- Pale Teal #82CBB2 ΔE 0.050
- Soft Green #6FC276 ΔE 0.052
- Greenblue #23C48B ΔE 0.053
- Aqua Green #12E193 ΔE 0.060
- Seaweed #18D17B ΔE 0.060
Use #5BD09E 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.