#1BCBB5
Closest named color: Dark Turquoise (#00CED1). oklch(75.7% 0.133 181.1), rgb(27, 203, 181).
Aa
Black text reads best on this color (10.25:1).
About this color
#1BCBB5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.133 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.039 away. Black text reads best on it, at 10.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.25:1 |
| White text | 2.04:1 |
Values
| HEX | #1BCBB5 |
| RGB | rgb(27, 203, 181) |
| HSL | hsl(173, 77%, 45%) |
| OKLCH | oklch(75.7% 0.133 181.1) |
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 #1BCBB5 | 2.04:1 | Fails | Lc -43.8 | Non-text elements, placeholder text |
| Black text on #1BCBB5 | 10.25:1 | AAA | Lc 64.6 | Content text, not long reading |
| #1BCBB5 text on white | 2.04:1 | Fails | Lc 39.3 | Non-text elements, placeholder text |
| #1BCBB5 text on black | 10.25:1 | AAA | Lc -63.0 | 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
#81D3C4
oklch(81% 0.084 181.1)
-
Step 400
400 (this color)
#1BCBB5
oklch(75.7% 0.133 181.1)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
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)
#1BCBB5 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) | #C1BEB4 | 0.140 |
| Deuteranopia (no green cones) | #ACAFB7 | 0.133 |
| Tritanopia (no blue cones) | #00CFC4 | 0.021 |
| Achromatopsia (no color) | #B5B5B5 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BCBB5
#1BCBB5
oklch(75.7% 0.133 181.1)
- #F48AAB
#F48AAB
oklch(75.6% 0.133 0.8)
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 #1BCBB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.039
- Medium Aquamarine #66CDAA ΔE 0.040
- Medium Turquoise #48D1CC ΔE 0.041
- Topaz #13BBAF ΔE 0.046
- Emerald #06D6A0 ΔE 0.050
- Greenblue #23C48B ΔE 0.056
- Seafoam Blue #78D1B6 ΔE 0.058
- Green Blue #01C08D ΔE 0.058
Use #1BCBB5 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.