#4373FF
Closest named color: Clear Blue (#247AFD). oklch(60.3% 0.215 265.8), rgb(67, 115, 255).
Aa
Black text reads best on this color (5.13:1).
About this color
#4373FF is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.215 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.024 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.13:1 |
| White text | 4.08:1 |
Values
| HEX | #4373FF |
| RGB | rgb(67, 115, 255) |
| HSL | hsl(225, 100%, 63%) |
| OKLCH | oklch(60.3% 0.215 265.8) |
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 #4373FF | 4.08:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #4373FF | 5.13:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #4373FF text on white | 4.08:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #4373FF text on black | 5.13:1 | AA | Lc -34.1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500 (this color)
#4373FF
oklch(60.3% 0.215 265.8)
-
Step 600
600
#3260F9
oklch(55.6% 0.233 265.9)
-
Step 700
700
#264ED9
oklch(49.2% 0.217 265.8)
-
Step 800
800
#2041AF
oklch(42.7% 0.179 265.9)
-
Step 900
900
#1E398B
oklch(37.8% 0.14 265.9)
-
Step 950
950
#112251
oklch(26.9% 0.089 265.7)
#4373FF 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) | #0087FF | 0.051 |
| Deuteranopia (no green cones) | #0075FC | 0.032 |
| Tritanopia (no blue cones) | #0096AE | 0.171 |
| Achromatopsia (no color) | #7D7D7D | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4373FF
#4373FF
oklch(60.3% 0.215 265.8)
- #A27A00
#A27A00
oklch(60.2% 0.123 85.5)
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 #4373FF, closest first.
No curated palette has a color within ΔE 0.04 of #4373FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.024
- Cerulean Blue #056EEE ΔE 0.046
- Neon Blue #4361EE ΔE 0.048
- Cornflower #6A79F7 ΔE 0.049
- Royal Blue #4169E1 ΔE 0.050
- Bright Blue #0165FC ΔE 0.053
- Azul #1D5DEC ΔE 0.070
- Dodger Blue #1E90FF ΔE 0.071
Use #4373FF 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.