#1BBBE1
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.4% 0.13 220.1), rgb(27, 187, 225).
Aa
Black text reads best on this color (9.24:1).
About this color
#1BBBE1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.130 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.043 away. Black text reads best on it, at 9.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.24:1 |
| White text | 2.27:1 |
Values
| HEX | #1BBBE1 |
| RGB | rgb(27, 187, 225) |
| HSL | hsl(192, 79%, 49%) |
| OKLCH | oklch(73.4% 0.13 220.1) |
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 #1BBBE1 | 2.27:1 | Fails | Lc -49.1 | Large or bold text, headings |
| Black text on #1BBBE1 | 9.24:1 | AAA | Lc 59.7 | Large or bold text, headings |
| #1BBBE1 text on white | 2.27:1 | Fails | Lc 44.2 | Non-text elements, placeholder text |
| #1BBBE1 text on black | 9.24:1 | AAA | Lc -57.9 | 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
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DAEEF5
oklch(93.6% 0.023 220.7)
-
Step 200
200
#B9E1EE
oklch(88.5% 0.045 219.5)
-
Step 300
300
#83CDE5
oklch(80.8% 0.081 220.5)
-
Step 400
400 (this color)
#1BBBE1
oklch(73.4% 0.13 220.1)
-
Step 500
500
#0099B9
oklch(63.1% 0.115 219.7)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#1BBBE1 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) | #A4B6E3 | 0.107 |
| Deuteranopia (no green cones) | #8BA4E1 | 0.095 |
| Tritanopia (no blue cones) | #00C7C7 | 0.059 |
| Achromatopsia (no color) | #ACACAC | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBBE1
#1BBBE1
oklch(73.4% 0.13 220.1)
- #ED8B68
#ED8B68
oklch(73.4% 0.129 40.3)
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 #1BBBE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.043
- Turquoise Blue #06B1C4 ΔE 0.047
- Vivid Sky Blue #4CC9F0 ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.055
- Dark Turquoise #00CED1 ΔE 0.065
- Topaz #13BBAF ΔE 0.075
- Lightblue #7BC8F6 ΔE 0.079
- Light Sea Green #20B2AA ΔE 0.079
Use #1BBBE1 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.