#21BD97
Closest named color: Green Blue (#01C08D). oklch(71.4% 0.134 170.8), rgb(33, 189, 151).
Aa
Black text reads best on this color (8.79:1).
About this color
#21BD97 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.134 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.020 away. Black text reads best on it, at 8.79:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Green Blue (#01C08D) |
| Black text | 8.79:1 |
| White text | 2.38:1 |
Values
| HEX | #21BD97 |
| RGB | rgb(33, 189, 151) |
| HSL | hsl(165, 70%, 44%) |
| OKLCH | oklch(71.4% 0.134 170.8) |
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 #21BD97 | 2.38:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #21BD97 | 8.79:1 | AAA | Lc 57.4 | Large or bold text, headings |
| #21BD97 text on white | 2.38:1 | Fails | Lc 46.6 | Large or bold text, headings |
| #21BD97 text on black | 8.79:1 | AAA | Lc -55.5 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DBEFE8
oklch(93.5% 0.023 172.8)
-
Step 200
200
#BCE4D5
oklch(88.6% 0.047 170.5)
-
Step 300
300
#87D3B9
oklch(81% 0.085 170.5)
-
Step 400
400 (this color)
#21BD97
oklch(71.4% 0.134 170.8)
-
Step 500
500
#00A17F
oklch(63.1% 0.124 170.8)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#21BD97 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) | #B7B095 | 0.137 |
| Deuteranopia (no green cones) | #A4A29A | 0.131 |
| Tritanopia (no blue cones) | #00BFB2 | 0.037 |
| Achromatopsia (no color) | #A8A8A8 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21BD97
#21BD97
oklch(71.4% 0.134 170.8)
- #E17DAD
#E17DAD
oklch(71.3% 0.135 350.9)
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 #21BD97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.020
- Greeny Blue #42B395 ΔE 0.030
- Greenblue #23C48B ΔE 0.030
- Topaz #13BBAF ΔE 0.037
- Dark Seafoam #1FB57A ΔE 0.041
- Bluey Green #2BB179 ΔE 0.045
- Green Teal #0CB577 ΔE 0.046
- Light Sea Green #20B2AA ΔE 0.049
Use #21BD97 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.