#00C591
Closest named color: Greenblue (#23C48B). oklch(73% 0.152 165.8), rgb(0, 197, 145).
Aa
Black text reads best on this color (9.39:1).
About this color
#00C591 is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.152 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.008 away. Black text reads best on it, at 9.39:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #00C591 |
| RGB | rgb(0, 197, 145) |
| HSL | hsl(164, 100%, 39%) |
| OKLCH | oklch(73% 0.152 165.8) |
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 #00C591 | 2.23:1 | Fails | Lc -48.1 | Large or bold text, headings |
| Black text on #00C591 | 9.39:1 | AAA | Lc 60.6 | Content text, not long reading |
| #00C591 text on white | 2.23:1 | Fails | Lc 43.3 | Non-text elements, placeholder text |
| #00C591 text on black | 9.39:1 | AAA | Lc -58.8 | 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
#EEF8F3
oklch(97% 0.012 164.8)
-
Step 100
100
#DAF0E6
oklch(93.6% 0.027 166.8)
-
Step 200
200
#B9E5D1
oklch(88.5% 0.053 165.8)
-
Step 300
300
#82D4B2
oklch(80.8% 0.095 165.8)
-
Step 400
400 (this color)
#00C591
oklch(73% 0.152 165.8)
-
Step 500
500
#00A277
oklch(63.2% 0.131 166)
-
Step 600
600
#008863
oklch(55.6% 0.116 165.8)
-
Step 700
700
#007353
oklch(49.2% 0.103 165.6)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#00C591 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) | #C0B68E | 0.150 |
| Deuteranopia (no green cones) | #ADA794 | 0.146 |
| Tritanopia (no blue cones) | #00C5B7 | 0.055 |
| Achromatopsia (no color) | #ADADAD | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00C591
#00C591
oklch(73% 0.152 165.8)
- #EA7DBC
#EA7DBC
oklch(73% 0.152 345.8)
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 #00C591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.008
- Green Blue #01C08D ΔE 0.014
- Dark Mint Green #20C073 ΔE 0.037
- Dark Mint #48C072 ΔE 0.039
- Algae Green #21C36F ΔE 0.042
- Dark Seafoam #1FB57A ΔE 0.047
- Emerald #06D6A0 ΔE 0.048
- Green Teal #0CB577 ΔE 0.050
Use #00C591 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.