#1BBCC4
Closest named color: Topaz (#13BBAF). oklch(72.5% 0.119 200.4), rgb(27, 188, 196).
Aa
Black text reads best on this color (9.03:1).
About this color
#1BBCC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.119 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.031 away. Black text reads best on it, at 9.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.03:1 |
| White text | 2.32:1 |
Values
| HEX | #1BBCC4 |
| RGB | rgb(27, 188, 196) |
| HSL | hsl(183, 76%, 44%) |
| OKLCH | oklch(72.5% 0.119 200.4) |
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 #1BBCC4 | 2.32:1 | Fails | Lc -50.2 | Large or bold text, headings |
| Black text on #1BBCC4 | 9.03:1 | AAA | Lc 58.7 | Large or bold text, headings |
| #1BBCC4 text on white | 2.32:1 | Fails | Lc 45.3 | Large or bold text, headings |
| #1BBCC4 text on black | 9.03:1 | AAA | Lc -56.8 | 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)
#1BBCC4
oklch(72.5% 0.119 200.4)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#1BBCC4 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) | #ADB3C5 | 0.121 |
| Deuteranopia (no green cones) | #97A3C5 | 0.112 |
| Tritanopia (no blue cones) | #00C3BE | 0.025 |
| Achromatopsia (no color) | #AAAAAA | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBCC4
#1BBCC4
oklch(72.5% 0.119 200.4)
- #E78686
#E78686
oklch(72.4% 0.119 20.4)
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 #1BBCC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.031
- Turquoise Blue #06B1C4 ΔE 0.033
- Light Sea Green #20B2AA ΔE 0.041
- Dark Turquoise #00CED1 ΔE 0.049
- Greeny Blue #42B395 ΔE 0.064
- Medium Turquoise #48D1CC ΔE 0.065
- Vivid Sky Blue #4CC9F0 ΔE 0.074
- Medium Aquamarine #66CDAA ΔE 0.082
Use #1BBCC4 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.