#4070D8
Closest named color: Royal Blue (#4169E1). oklch(56.7% 0.168 263.4), rgb(64, 112, 216).
Aa
White text reads best on this color (4.63:1).
About this color
#4070D8 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.168 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.023 away. White text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.52:1 |
| White text | 4.63:1 |
Values
| HEX | #4070D8 |
| RGB | rgb(64, 112, 216) |
| HSL | hsl(221, 66%, 55%) |
| OKLCH | oklch(56.7% 0.168 263.4) |
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 #4070D8 | 4.63:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #4070D8 | 4.52:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #4070D8 text on white | 4.63:1 | AA | Lc 71.8 | Content text, not long reading |
| #4070D8 text on black | 4.52:1 | AA | Lc -29.8 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF6
oklch(88.6% 0.042 263)
-
Step 300
300
#A7C1F2
oklch(80.9% 0.075 262.9)
-
Step 400
400
#799FEC
oklch(70.7% 0.121 263.6)
-
Step 500
500
#5785E6
oklch(63.1% 0.155 263.5)
-
Step 600
600 (this color)
#4070D8
oklch(56.7% 0.168 263.4)
-
Step 700
700
#2F5AB8
oklch(49.1% 0.157 263.3)
-
Step 800
800
#284A95
oklch(42.7% 0.13 263.5)
-
Step 900
900
#243F77
oklch(37.8% 0.101 263.1)
-
Step 950
950
#162545
oklch(27% 0.063 263.8)
#4070D8 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) | #377CDC | 0.031 |
| Deuteranopia (no green cones) | #066ED6 | 0.033 |
| Tritanopia (no blue cones) | #00889A | 0.133 |
| Achromatopsia (no color) | #757575 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4070D8
#4070D8
oklch(56.7% 0.168 263.4)
- #976F00
#976F00
oklch(56.7% 0.116 83.5)
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 #4070D8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.023
- Cerulean Blue #056EEE ΔE 0.045
- Windows Blue #3778BF ΔE 0.048
- Neon Blue #4361EE ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.057
- Clear Blue #247AFD ΔE 0.059
- Warm Blue #4B57DB ΔE 0.060
- Mid Blue #276AB3 ΔE 0.064
Use #4070D8 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.