#43A1FF
Closest named color: Chefchaouen Blue (#4895EF). oklch(69.7% 0.164 251.4), rgb(67, 161, 255).
Aa
Black text reads best on this color (7.78:1).
About this color
#43A1FF is a medium-light, vivid blue. In OKLCH its lightness is 70%, its chroma 0.164 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.036 away. Black text reads best on it, at 7.78:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.78:1 |
| White text | 2.69:1 |
Values
| HEX | #43A1FF |
| RGB | rgb(67, 161, 255) |
| HSL | hsl(210, 100%, 63%) |
| OKLCH | oklch(69.7% 0.164 251.4) |
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 #43A1FF | 2.69:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #43A1FF | 7.78:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #43A1FF text on white | 2.69:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #43A1FF text on black | 7.78:1 | AAA | Lc -49.9 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DCECFE
oklch(93.7% 0.03 251.3)
-
Step 200
200
#BEDCFE
oklch(88.4% 0.057 251.7)
-
Step 300
300
#91C5FF
oklch(80.9% 0.099 251.8)
-
Step 400
400 (this color)
#43A1FF
oklch(69.7% 0.164 251.4)
-
Step 500
500
#008BF4
oklch(63.1% 0.185 251.3)
-
Step 600
600
#0074CE
oklch(55.5% 0.163 251.5)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950
#00274B
oklch(27% 0.079 251.1)
#43A1FF 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) | #75A7FF | 0.049 |
| Deuteranopia (no green cones) | #5996FD | 0.030 |
| Tritanopia (no blue cones) | #00B7C4 | 0.122 |
| Achromatopsia (no color) | #9D9D9D | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43A1FF
#43A1FF
oklch(69.7% 0.164 251.4)
- #D68B00
#D68B00
oklch(69.7% 0.15 71.5)
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 #43A1FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.036
- Cornflower Blue #6495ED ΔE 0.041
- Dodger Blue #1E90FF ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.059
- Soft Blue #6488EA ΔE 0.068
- Periwinkle Blue #8F99FB ΔE 0.075
- Deep Sky Blue #00BFFF ΔE 0.080
- Lavender Blue #8B88F8 ΔE 0.089
Use #43A1FF 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.