#4080E5
Closest named color: Dark Sky Blue (#448EE4). oklch(60.9% 0.167 259.2), rgb(64, 128, 229).
Aa
Black text reads best on this color (5.43:1).
About this color
#4080E5 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.167 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.039 away. Black text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #4080E5 |
| RGB | rgb(64, 128, 229) |
| HSL | hsl(217, 76%, 57%) |
| OKLCH | oklch(60.9% 0.167 259.2) |
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 #4080E5 | 3.86:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #4080E5 | 5.43:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #4080E5 text on white | 3.86:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #4080E5 text on black | 5.43:1 | AA | Lc -35.9 | 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
#A1C2F6
oklch(80.8% 0.082 259.4)
-
Step 400
400
#6EA1F1
oklch(70.7% 0.13 259.1)
-
Step 500
500 (this color)
#4080E5
oklch(60.9% 0.167 259.2)
-
Step 600
600
#276EDB
oklch(55.6% 0.181 259.2)
-
Step 700
700
#1A5BBE
oklch(49.1% 0.169 259.3)
-
Step 800
800
#184B9A
oklch(42.7% 0.14 259.3)
-
Step 900
900
#1A3F7A
oklch(37.6% 0.109 259.5)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#4080E5 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) | #4D8AE9 | 0.031 |
| Deuteranopia (no green cones) | #2D7BE3 | 0.021 |
| Tritanopia (no blue cones) | #0098A7 | 0.132 |
| Achromatopsia (no color) | #828282 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4080E5
#4080E5
oklch(60.9% 0.167 259.2)
- #AB7800
#AB7800
oklch(60.9% 0.127 78.9)
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 #4080E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.039
- Clear Blue #247AFD ΔE 0.045
- Soft Blue #6488EA ΔE 0.045
- Dodger Blue #1E90FF ΔE 0.052
- Water Blue #0E87CC ΔE 0.052
- Cornflower #6A79F7 ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.057
- Royal Blue #4169E1 ΔE 0.058
Use #4080E5 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.