#05DCFB
Closest named color: Aqua Blue (#02D8E9). oklch(82.2% 0.143 212.6), rgb(5, 220, 251).
Aa
Black text reads best on this color (12.63:1).
About this color
#05DCFB is a light, vivid teal or cyan. In OKLCH its lightness is 82%, its chroma 0.143 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.026 away. Black text reads best on it, at 12.63:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.63:1 |
| White text | 1.66:1 |
Values
| HEX | #05DCFB |
| RGB | rgb(5, 220, 251) |
| HSL | hsl(188, 97%, 50%) |
| OKLCH | oklch(82.2% 0.143 212.6) |
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 #05DCFB | 1.66:1 | Fails | Lc -32.1 | Non-text elements, placeholder text |
| Black text on #05DCFB | 12.63:1 | AAA | Lc 75.4 | Fine for body text |
| #05DCFB text on white | 1.66:1 | Fails | Lc 28.4 | Dividers and decoration only |
| #05DCFB text on black | 12.63:1 | AAA | Lc -74.5 | Content text, not long reading |
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
#9AE8F8
oklch(88.6% 0.079 211.9)
-
Step 300
300 (this color)
#05DCFB
oklch(82.2% 0.143 212.6)
-
Step 400
400
#00B4CE
oklch(70.7% 0.124 212.8)
-
Step 500
500
#009AB1
oklch(63% 0.11 213.1)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#05DCFB 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) | #C5D4FD | 0.131 |
| Deuteranopia (no green cones) | #A9C0FB | 0.118 |
| Tritanopia (no blue cones) | #00E8E6 | 0.052 |
| Achromatopsia (no color) | #C9C9C9 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05DCFB
#05DCFB
oklch(82.2% 0.143 212.6)
- #FFAD9B
#FFAD9B
oklch(82.2% 0.1 32.9)
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 #05DCFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.026
- Bright Sky Blue #02CCFE ΔE 0.046
- Vivid Sky Blue #4CC9F0 ΔE 0.050
- Dark Turquoise #00CED1 ΔE 0.064
- Medium Turquoise #48D1CC ΔE 0.064
- Robin's Egg #6DEDFD ΔE 0.066
- Turquoise #40E0D0 ΔE 0.066
- Sky Blue #87CEEB ΔE 0.066
Use #05DCFB 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.