#1BBCC5
Closest named color: Topaz (#13BBAF). oklch(72.5% 0.12 201.1), rgb(27, 188, 197).
Aa
Black text reads best on this color (9.04:1).
About this color
#1BBCC5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.120 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.033 away. Black text reads best on it, at 9.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.04:1 |
| White text | 2.32:1 |
Values
| HEX | #1BBCC5 |
| RGB | rgb(27, 188, 197) |
| HSL | hsl(183, 76%, 44%) |
| OKLCH | oklch(72.5% 0.12 201.1) |
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 #1BBCC5 | 2.32:1 | Fails | Lc -50.1 | Large or bold text, headings |
| Black text on #1BBCC5 | 9.04:1 | AAA | Lc 58.7 | Large or bold text, headings |
| #1BBCC5 text on white | 2.32:1 | Fails | Lc 45.2 | Large or bold text, headings |
| #1BBCC5 text on black | 9.04:1 | AAA | Lc -56.9 | 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
#DAEFF0
oklch(93.7% 0.022 200.2)
-
Step 200
200
#BAE2E4
oklch(88.5% 0.042 200.2)
-
Step 300
300
#85D0D4
oklch(81% 0.075 200.1)
-
Step 400
400 (this color)
#1BBCC5
oklch(72.5% 0.12 201.1)
-
Step 500
500
#009CA4
oklch(63% 0.107 201.2)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005A5F
oklch(42.5% 0.072 201.4)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#1BBCC5 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) | #ADB3C6 | 0.121 |
| Deuteranopia (no green cones) | #97A3C6 | 0.112 |
| Tritanopia (no blue cones) | #00C4BE | 0.028 |
| Achromatopsia (no color) | #AAAAAA | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBCC5
#1BBCC5
oklch(72.5% 0.12 201.1)
- #E88685
#E88685
oklch(72.5% 0.12 21.1)
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 #1BBCC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.033
- Turquoise Blue #06B1C4 ΔE 0.033
- Light Sea Green #20B2AA ΔE 0.042
- Dark Turquoise #00CED1 ΔE 0.049
- Medium Turquoise #48D1CC ΔE 0.065
- Greeny Blue #42B395 ΔE 0.066
- Vivid Sky Blue #4CC9F0 ΔE 0.073
- Aqua Blue #02D8E9 ΔE 0.082
Use #1BBCC5 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.