#91C557
Closest named color: Light Olive Green (#A4BE5C). oklch(76.3% 0.151 130.4), rgb(145, 197, 87).
Aa
Black text reads best on this color (10.32:1).
About this color
#91C557 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.151 and its hue 130°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Olive Green (#A4BE5C), ΔE 0.031 away. Black text reads best on it, at 10.32:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Light Olive Green (#A4BE5C) |
| Black text | 10.32:1 |
| White text | 2.03:1 |
Values
| HEX | #91C557 |
| RGB | rgb(145, 197, 87) |
| HSL | hsl(88, 49%, 56%) |
| OKLCH | oklch(76.3% 0.151 130.4) |
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 #91C557 | 2.03:1 | Fails | Lc -43.9 | Non-text elements, placeholder text |
| Black text on #91C557 | 10.32:1 | AAA | Lc 64.5 | Content text, not long reading |
| #91C557 text on white | 2.03:1 | Fails | Lc 39.4 | Non-text elements, placeholder text |
| #91C557 text on black | 10.32:1 | AAA | Lc -62.9 | 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
#F1F8EA
oklch(97% 0.02 128.7)
-
Step 100
100
#E0F0D2
oklch(93.5% 0.043 130.3)
-
Step 200
200
#C7E5AB
oklch(88.5% 0.083 130.2)
-
Step 300
300 (this color)
#91C557
oklch(76.3% 0.151 130.4)
-
Step 400
400
#76B700
oklch(70.8% 0.192 130.5)
-
Step 500
500
#659C00
oklch(63% 0.17 130.2)
-
Step 600
600
#548400
oklch(55.7% 0.151 130.4)
-
Step 700
700
#466F00
oklch(49.2% 0.133 130.4)
-
Step 800
800
#385B00
oklch(42.8% 0.116 130.7)
-
Step 900
900
#2E4C00
oklch(37.8% 0.103 130.7)
-
Step 950
950
#1A2D00
oklch(27% 0.073 130.1)
#91C557 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) | #CDB84C | 0.082 |
| Deuteranopia (no green cones) | #C6B55E | 0.082 |
| Tritanopia (no blue cones) | #94BDAD | 0.117 |
| Achromatopsia (no color) | #B6B6B6 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91C557
#91C557
oklch(76.3% 0.151 130.4)
- #D095F9
#D095F9
oklch(76.4% 0.151 310.4)
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 #91C557, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Olive Green #A4BE5C ΔE 0.031
- Pea #A4BF20 ΔE 0.036
- Yellow Green #9ACD32 ΔE 0.040
- Bright Olive #9CBB04 ΔE 0.043
- Light Moss Green #A6C875 ΔE 0.044
- Light Olive #ACBF69 ΔE 0.046
- Soft Green #6FC276 ΔE 0.047
- Tan Green #A9BE70 ΔE 0.050
Use #91C557 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.