#27B133
Closest named color: Shamrock (#01B44C). oklch(66.5% 0.2 143.9), rgb(39, 177, 51).
Aa
Black text reads best on this color (7.42:1).
About this color
#27B133 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.200 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.020 away. Black text reads best on it, at 7.42:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.200) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.42:1 |
| White text | 2.82:1 |
Values
| HEX | #27B133 |
| RGB | rgb(39, 177, 51) |
| HSL | hsl(125, 64%, 42%) |
| OKLCH | oklch(66.5% 0.2 143.9) |
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 #27B133 | 2.82:1 | Fails | Lc -59.0 | Large or bold text, headings |
| Black text on #27B133 | 7.42:1 | AAA | Lc 50.3 | Large or bold text, headings |
| #27B133 text on white | 2.82:1 | Fails | Lc 53.7 | Large or bold text, headings |
| #27B133 text on black | 7.42:1 | AAA | Lc -48.1 | 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 500.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDE
oklch(93.6% 0.028 143.7)
-
Step 200
200
#C4E3C3
oklch(88.5% 0.054 144.3)
-
Step 300
300
#9AD298
oklch(81% 0.099 143.8)
-
Step 400
400
#5CB95D
oklch(70.7% 0.157 143.9)
-
Step 500
500 (this color)
#27B133
oklch(66.5% 0.2 143.9)
-
Step 600
600
#008C19
oklch(55.6% 0.181 143.9)
-
Step 700
700
#007614
oklch(49.1% 0.16 143.9)
-
Step 800
800
#00610E
oklch(42.8% 0.139 143.9)
-
Step 900
900
#00510A
oklch(37.7% 0.123 143.9)
-
Step 950
950
#033007
oklch(27% 0.083 144.2)
#27B133 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) | #B4A01F | 0.145 |
| Deuteranopia (no green cones) | #A59640 | 0.145 |
| Tritanopia (no blue cones) | #00AC98 | 0.126 |
| Achromatopsia (no color) | #9A9A9A | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #27B133
#27B133
oklch(66.5% 0.2 143.9)
- #CD60D8
#CD60D8
oklch(66.6% 0.2 323.9)
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 #27B133, closest first.
No curated palette has a color within ΔE 0.04 of #27B133.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.020
- Kelly Green #02AB2E ΔE 0.021
- Medium Green #39AD48 ΔE 0.027
- Leafy Green #51B73B ΔE 0.033
- Grass #5CAC2D ΔE 0.034
- Leaf Green #5CA904 ΔE 0.035
- Shamrock Green #02C14D ΔE 0.045
- Mid Green #50A747 ΔE 0.045
Use #27B133 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.