#23CBB5
Closest named color: Medium Aquamarine (#66CDAA). oklch(75.8% 0.131 181), rgb(35, 203, 181).
Aa
Black text reads best on this color (10.28:1).
About this color
#23CBB5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.131 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.038 away. Black text reads best on it, at 10.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.28:1 |
| White text | 2.04:1 |
Values
| HEX | #23CBB5 |
| RGB | rgb(35, 203, 181) |
| HSL | hsl(172, 71%, 47%) |
| OKLCH | oklch(75.8% 0.131 181) |
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 #23CBB5 | 2.04:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #23CBB5 | 10.28:1 | AAA | Lc 64.7 | Content text, not long reading |
| #23CBB5 text on white | 2.04:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #23CBB5 text on black | 10.28:1 | AAA | Lc -63.1 | 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 400.
-
Step 50
50
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DAEFEB
oklch(93.6% 0.023 183.2)
-
Step 200
200
#B9E4DB
oklch(88.6% 0.046 181)
-
Step 300
300
#82D2C3
oklch(80.8% 0.082 180.9)
-
Step 400
400 (this color)
#23CBB5
oklch(75.8% 0.131 181)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#23CBB5 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) | #C2BEB4 | 0.140 |
| Deuteranopia (no green cones) | #ACAFB7 | 0.131 |
| Tritanopia (no blue cones) | #00CFC4 | 0.021 |
| Achromatopsia (no color) | #B5B5B5 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23CBB5
#23CBB5
oklch(75.8% 0.131 181)
- #F48BAB
#F48BAB
oklch(75.8% 0.132 1.2)
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 #23CBB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.038
- Dark Turquoise #00CED1 ΔE 0.038
- Medium Turquoise #48D1CC ΔE 0.040
- Topaz #13BBAF ΔE 0.046
- Emerald #06D6A0 ΔE 0.050
- Seafoam Blue #78D1B6 ΔE 0.056
- Greenblue #23C48B ΔE 0.057
- Green Blue #01C08D ΔE 0.059
Use #23CBB5 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.