#28B563
Closest named color: Cool Green (#33B864). oklch(68.2% 0.166 152.1), rgb(40, 181, 99).
Aa
Black text reads best on this color (7.87:1).
About this color
#28B563 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.166 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.011 away. Black text reads best on it, at 7.87:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 7.87:1 |
| White text | 2.66:1 |
Values
| HEX | #28B563 |
| RGB | rgb(40, 181, 99) |
| HSL | hsl(145, 64%, 43%) |
| OKLCH | oklch(68.2% 0.166 152.1) |
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 #28B563 | 2.66:1 | Fails | Lc -56.5 | Large or bold text, headings |
| Black text on #28B563 | 7.87:1 | AAA | Lc 52.7 | Large or bold text, headings |
| #28B563 text on white | 2.66:1 | Fails | Lc 51.3 | Large or bold text, headings |
| #28B563 text on black | 7.87:1 | AAA | Lc -50.6 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DCF0E0
oklch(93.6% 0.03 151.5)
-
Step 200
200
#BEE5C7
oklch(88.6% 0.058 152)
-
Step 300
300
#8CD4A0
oklch(80.8% 0.103 152.4)
-
Step 400
400 (this color)
#28B563
oklch(68.2% 0.166 152.1)
-
Step 500
500
#00A554
oklch(63.2% 0.166 152.1)
-
Step 600
600
#008A46
oklch(55.5% 0.145 152.3)
-
Step 700
700
#00743A
oklch(49% 0.128 152.4)
-
Step 800
800
#00602E
oklch(42.8% 0.113 152)
-
Step 900
900
#005025
oklch(37.8% 0.1 151.8)
-
Step 950
950
#003014
oklch(27.1% 0.071 152.1)
#28B563 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) | #B5A55D | 0.141 |
| Deuteranopia (no green cones) | #A59A69 | 0.139 |
| Tritanopia (no blue cones) | #00B2A1 | 0.088 |
| Achromatopsia (no color) | #9E9E9E | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28B563
#28B563
oklch(68.2% 0.166 152.1)
- #D36EC6
#D36EC6
oklch(68.4% 0.166 332.2)
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 #28B563, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.011
- Jade Green #2BAF6A ΔE 0.022
- Medium Sea Green #3CB371 ΔE 0.024
- Green Teal #0CB577 ΔE 0.025
- Seaweed Green #35AD6B ΔE 0.029
- Shamrock #01B44C ΔE 0.029
- Dark Pastel Green #56AE57 ΔE 0.029
- Dark Seafoam #1FB57A ΔE 0.029
Use #28B563 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.