#4383EB
Closest named color: Dark Sky Blue (#448EE4). oklch(62.1% 0.17 259.7), rgb(67, 131, 235).
Aa
Black text reads best on this color (5.68:1).
About this color
#4383EB is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.170 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.033 away. Black text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #4383EB |
| RGB | rgb(67, 131, 235) |
| HSL | hsl(217, 81%, 59%) |
| OKLCH | oklch(62.1% 0.17 259.7) |
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 #4383EB | 3.69:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #4383EB | 5.68:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #4383EB text on white | 3.69:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #4383EB text on black | 5.68:1 | AA | Lc -37.5 | Non-text elements, placeholder 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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300
#A1C2F7
oklch(80.9% 0.084 259.8)
-
Step 400
400
#6EA1F3
oklch(70.8% 0.133 259.5)
-
Step 500
500 (this color)
#4383EB
oklch(62.1% 0.17 259.7)
-
Step 600
600
#276DDD
oklch(55.6% 0.185 259.7)
-
Step 700
700
#195AC0
oklch(49% 0.173 259.7)
-
Step 800
800
#184A9B
oklch(42.6% 0.143 259.9)
-
Step 900
900
#1A3F7B
oklch(37.6% 0.111 259.7)
-
Step 950
950
#102548
oklch(26.9% 0.071 260)
#4383EB 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) | #4F8DEF | 0.030 |
| Deuteranopia (no green cones) | #2D7EE9 | 0.023 |
| Tritanopia (no blue cones) | #009BAB | 0.135 |
| Achromatopsia (no color) | #858585 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4383EB
#4383EB
oklch(62.1% 0.17 259.7)
- #AF7C00
#AF7C00
oklch(62.1% 0.129 79.7)
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 #4383EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.033
- Soft Blue #6488EA ΔE 0.037
- Dodger Blue #1E90FF ΔE 0.042
- Clear Blue #247AFD ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.048
- Cornflower #6A79F7 ΔE 0.050
- Water Blue #0E87CC ΔE 0.059
- Cornflower Blue #6495ED ΔE 0.061
Use #4383EB 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.