#09DFFB
Closest named color: Aqua Blue (#02D8E9). oklch(82.9% 0.143 210.8), rgb(9, 223, 251).
Aa
Black text reads best on this color (12.95:1).
About this color
#09DFFB is a light, vivid teal or cyan. In OKLCH its lightness is 83%, its chroma 0.143 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.028 away. Black text reads best on it, at 12.95:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.95:1 |
| White text | 1.62:1 |
Values
| HEX | #09DFFB |
| RGB | rgb(9, 223, 251) |
| HSL | hsl(187, 97%, 51%) |
| OKLCH | oklch(82.9% 0.143 210.8) |
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 #09DFFB | 1.62:1 | Fails | Lc -30.6 | Non-text elements, placeholder text |
| Black text on #09DFFB | 12.95:1 | AAA | Lc 76.7 | Fine for body text |
| #09DFFB text on white | 1.62:1 | Fails | Lc 27.1 | Dividers and decoration only |
| #09DFFB text on black | 12.95:1 | AAA | Lc -75.9 | Fine for body text |
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 300.
-
Step 50
50
#E8F9FD
oklch(97.1% 0.019 213.4)
-
Step 100
100
#CBF2FA
oklch(93.6% 0.042 211.5)
-
Step 200
200
#99E8F7
oklch(88.5% 0.08 210.8)
-
Step 300
300 (this color)
#09DFFB
oklch(82.9% 0.143 210.8)
-
Step 400
400
#00B4CB
oklch(70.6% 0.122 210.8)
-
Step 500
500
#009BAF
oklch(63.2% 0.11 210.8)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005966
oklch(42.6% 0.074 211.8)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#09DFFB 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) | #C8D7FD | 0.133 |
| Deuteranopia (no green cones) | #ADC3FB | 0.120 |
| Tritanopia (no blue cones) | #00EBE8 | 0.049 |
| Achromatopsia (no color) | #CBCBCB | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09DFFB
#09DFFB
oklch(82.9% 0.143 210.8)
- #FFB0A1
#FFB0A1
oklch(82.9% 0.096 31.1)
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 #09DFFB, closest first.
No curated palette has a color within ΔE 0.04 of #09DFFB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.028
- Bright Sky Blue #02CCFE ΔE 0.055
- Vivid Sky Blue #4CC9F0 ΔE 0.058
- Robin's Egg #6DEDFD ΔE 0.059
- Turquoise #40E0D0 ΔE 0.062
- Medium Turquoise #48D1CC ΔE 0.066
- Dark Turquoise #00CED1 ΔE 0.067
- Bright Light Blue #26F7FD ΔE 0.067
Use #09DFFB 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.