#45D5FF
Closest named color: Bright Sky Blue (#02CCFE). oklch(81.5% 0.132 221.7), rgb(69, 213, 255).
Aa
Black text reads best on this color (12.21:1).
About this color
#45D5FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.132 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Sky Blue (#02CCFE), ΔE 0.033 away. Black text reads best on it, at 12.21:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 12.21:1 |
| White text | 1.71:1 |
Values
| HEX | #45D5FF |
| RGB | rgb(69, 213, 255) |
| HSL | hsl(194, 100%, 64%) |
| OKLCH | oklch(81.5% 0.132 221.7) |
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 #45D5FF | 1.71:1 | Fails | Lc -34.4 | Non-text elements, placeholder text |
| Black text on #45D5FF | 12.21:1 | AAA | Lc 73.3 | Content text, not long reading |
| #45D5FF text on white | 1.71:1 | Fails | Lc 30.6 | Non-text elements, placeholder text |
| #45D5FF text on black | 12.21:1 | AAA | Lc -72.2 | 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
#E9F8FE
oklch(97% 0.018 223.6)
-
Step 100
100
#CFF0FC
oklch(93.5% 0.038 221.8)
-
Step 200
200
#A3E5FC
oklch(88.6% 0.073 221.6)
-
Step 300
300 (this color)
#45D5FF
oklch(81.5% 0.132 221.7)
-
Step 400
400
#00B2DA
oklch(70.7% 0.13 221.5)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#45D5FF 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) | #BCD0FF | 0.106 |
| Deuteranopia (no green cones) | #A3BDFF | 0.096 |
| Tritanopia (no blue cones) | #00E2E2 | 0.065 |
| Achromatopsia (no color) | #C5C5C5 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45D5FF
#45D5FF
oklch(81.5% 0.132 221.7)
- #FFAA8A
#FFAA8A
oklch(81.4% 0.11 41.4)
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 #45D5FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.033
- Vivid Sky Blue #4CC9F0 ΔE 0.034
- Aqua Blue #02D8E9 ΔE 0.041
- Lightblue #7BC8F6 ΔE 0.045
- Light Sky Blue #87CEFA ΔE 0.048
- Sky #82CAFC ΔE 0.048
- Sky Blue #87CEEB ΔE 0.051
- Deep Sky Blue #00BFFF ΔE 0.067
Use #45D5FF 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.