#63B258
Closest named color: Boring Green (#63B365). oklch(69.2% 0.148 141.3), rgb(99, 178, 88).
Aa
Black text reads best on this color (8.03:1).
About this color
#63B258 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.148 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Boring Green (#63B365), ΔE 0.014 away. Black text reads best on it, at 8.03:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 8.03:1 |
| White text | 2.61:1 |
Values
| HEX | #63B258 |
| RGB | rgb(99, 178, 88) |
| HSL | hsl(113, 37%, 52%) |
| OKLCH | oklch(69.2% 0.148 141.3) |
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 #63B258 | 2.61:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #63B258 | 8.03:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #63B258 text on white | 2.61:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #63B258 text on black | 8.03:1 | AAA | Lc -51.1 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDE
oklch(93.6% 0.028 142)
-
Step 200
200
#C7E2C3
oklch(88.5% 0.051 141.6)
-
Step 300
300
#9FD098
oklch(80.9% 0.093 141.5)
-
Step 400
400 (this color)
#63B258
oklch(69.2% 0.148 141.3)
-
Step 500
500
#36A425
oklch(63.2% 0.189 141.3)
-
Step 600
600
#1A8B00
oklch(55.5% 0.184 141.3)
-
Step 700
700
#147500
oklch(49% 0.162 141.3)
-
Step 800
800
#0F6000
oklch(42.6% 0.141 141.3)
-
Step 900
900
#0D5002
oklch(37.6% 0.123 141.3)
-
Step 950
950
#0B2F06
oklch(26.9% 0.078 141.2)
#63B258 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) | #B6A550 | 0.105 |
| Deuteranopia (no green cones) | #AB9D5E | 0.105 |
| Tritanopia (no blue cones) | #5BAD9D | 0.097 |
| Achromatopsia (no color) | #A0A0A0 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B258
#63B258
oklch(69.2% 0.148 141.3)
- #C57BD3
#C57BD3
oklch(69.2% 0.147 321.1)
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 #63B258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.014
- Dark Pastel Green #56AE57 ΔE 0.018
- Fern #63A950 ΔE 0.025
- Asparagus #77AB56 ΔE 0.026
- Turtle Green #75B84F ΔE 0.028
- Algae #54AC68 ΔE 0.032
- Cool Green #33B864 ΔE 0.033
- Leaf #71AA34 ΔE 0.033
Use #63B258 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.