#28B889
Closest named color: Dark Seafoam (#1FB57A). oklch(69.8% 0.136 165.4), rgb(40, 184, 137).
Aa
Black text reads best on this color (8.30:1).
About this color
#28B889 is a medium-light, moderately saturated green. In OKLCH its lightness is 70%, its chroma 0.136 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam (#1FB57A), ΔE 0.021 away. Black text reads best on it, at 8.30:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Dark Seafoam (#1FB57A) |
| Black text | 8.30:1 |
| White text | 2.52:1 |
Values
| HEX | #28B889 |
| RGB | rgb(40, 184, 137) |
| HSL | hsl(160, 64%, 44%) |
| OKLCH | oklch(69.8% 0.136 165.4) |
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 #28B889 | 2.52:1 | Fails | Lc -54.2 | Large or bold text, headings |
| Black text on #28B889 | 8.30:1 | AAA | Lc 54.9 | Large or bold text, headings |
| #28B889 text on white | 2.52:1 | Fails | Lc 49.1 | Large or bold text, headings |
| #28B889 text on black | 8.30:1 | AAA | Lc -52.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DBEFE6
oklch(93.5% 0.024 167.1)
-
Step 200
200
#BDE4D2
oklch(88.6% 0.048 165.6)
-
Step 300
300
#8AD3B3
oklch(81% 0.086 165)
-
Step 400
400 (this color)
#28B889
oklch(69.8% 0.136 165.4)
-
Step 500
500
#00A276
oklch(63.1% 0.132 165.5)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#28B889 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) | #B4AA86 | 0.135 |
| Deuteranopia (no green cones) | #A29E8C | 0.129 |
| Tritanopia (no blue cones) | #00B8AB | 0.049 |
| Achromatopsia (no color) | #A3A3A3 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28B889
#28B889
oklch(69.8% 0.136 165.4)
- #D979B1
#D979B1
oklch(69.9% 0.136 345.2)
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 #28B889, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam #1FB57A ΔE 0.021
- Green Blue #01C08D ΔE 0.022
- Bluey Green #2BB179 ΔE 0.025
- Green Teal #0CB577 ΔE 0.027
- Greeny Blue #42B395 ΔE 0.029
- Dark Seafoam Green #3EAF76 ΔE 0.029
- Medium Sea Green #3CB371 ΔE 0.030
- Greenblue #23C48B ΔE 0.035
Use #28B889 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.