#01B9BE
Closest named color: Topaz (#13BBAF). oklch(71.3% 0.121 198.2), rgb(1, 185, 190).
Aa
Black text reads best on this color (8.68:1).
About this color
#01B9BE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.121 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.025 away. Black text reads best on it, at 8.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.68:1 |
| White text | 2.41:1 |
Values
| HEX | #01B9BE |
| RGB | rgb(1, 185, 190) |
| HSL | hsl(182, 99%, 37%) |
| OKLCH | oklch(71.3% 0.121 198.2) |
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 #01B9BE | 2.41:1 | Fails | Lc -51.9 | Large or bold text, headings |
| Black text on #01B9BE | 8.68:1 | AAA | Lc 57.0 | Large or bold text, headings |
| #01B9BE text on white | 2.41:1 | Fails | Lc 46.9 | Large or bold text, headings |
| #01B9BE text on black | 8.68:1 | AAA | Lc -55.1 | 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
#EEF8F8
oklch(97.2% 0.011 197)
-
Step 100
100
#DAEFEF
oklch(93.7% 0.022 196.8)
-
Step 200
200
#BAE2E3
oklch(88.5% 0.042 198.3)
-
Step 300
300
#84D0D2
oklch(80.9% 0.075 197.9)
-
Step 400
400 (this color)
#01B9BE
oklch(71.3% 0.121 198.2)
-
Step 500
500
#009DA1
oklch(63.2% 0.107 198)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#01B9BE 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) | #ABB0BF | 0.125 |
| Deuteranopia (no green cones) | #95A0BF | 0.115 |
| Tritanopia (no blue cones) | #00C0BA | 0.023 |
| Achromatopsia (no color) | #A7A7A7 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01B9BE
#01B9BE
oklch(71.3% 0.121 198.2)
- #E48285
#E48285
oklch(71.4% 0.121 18.6)
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 #01B9BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.025
- Turquoise Blue #06B1C4 ΔE 0.027
- Light Sea Green #20B2AA ΔE 0.030
- Greeny Blue #42B395 ΔE 0.056
- Dark Turquoise #00CED1 ΔE 0.060
- Medium Turquoise #48D1CC ΔE 0.075
- Cadet Blue #5F9EA0 ΔE 0.079
- Green Blue #01C08D ΔE 0.080
Use #01B9BE 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.