#45AAF2
Closest named color: Deep Sky Blue (#00BFFF). oklch(71.1% 0.14 243.4), rgb(69, 170, 242).
Aa
Black text reads best on this color (8.28:1).
About this color
#45AAF2 is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.140 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.055 away. Black text reads best on it, at 8.28:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.28:1 |
| White text | 2.53:1 |
Values
| HEX | #45AAF2 |
| RGB | rgb(69, 170, 242) |
| HSL | hsl(205, 87%, 61%) |
| OKLCH | oklch(71.1% 0.14 243.4) |
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 #45AAF2 | 2.53:1 | Fails | Lc -54.4 | Large or bold text, headings |
| Black text on #45AAF2 | 8.28:1 | AAA | Lc 54.7 | Large or bold text, headings |
| #45AAF2 text on white | 2.53:1 | Fails | Lc 49.3 | Large or bold text, headings |
| #45AAF2 text on black | 8.28:1 | AAA | Lc -52.6 | 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
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BEDEF7
oklch(88.5% 0.048 241.7)
-
Step 300
300
#8FC8F5
oklch(81% 0.087 242.9)
-
Step 400
400 (this color)
#45AAF2
oklch(71.1% 0.14 243.4)
-
Step 500
500
#0091DE
oklch(63.1% 0.153 243.2)
-
Step 600
600
#007ABC
oklch(55.7% 0.136 243.3)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005383
oklch(42.6% 0.105 243.8)
-
Step 900
900
#00456E
oklch(37.6% 0.092 243.7)
-
Step 950
950
#002944
oklch(27% 0.066 243.6)
#45AAF2 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) | #89ACF5 | 0.065 |
| Deuteranopia (no green cones) | #719BF1 | 0.050 |
| Tritanopia (no blue cones) | #00BCC3 | 0.100 |
| Achromatopsia (no color) | #A3A3A3 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45AAF2
#45AAF2
oklch(71.1% 0.14 243.4)
- #DE8C34
#DE8C34
oklch(71.1% 0.14 63.3)
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 #45AAF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.076
- Carolina Blue #8AB8FE ΔE 0.079
- Dodger Blue #1E90FF ΔE 0.082
- Turquoise Blue #06B1C4 ΔE 0.082
- Periwinkle Blue #8F99FB ΔE 0.084
Use #45AAF2 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.