#4374ED
Closest named color: Clear Blue (#247AFD). oklch(59.1% 0.19 264.6), rgb(67, 116, 237).
Aa
Black text reads best on this color (4.95:1).
About this color
#4374ED is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.190 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.031 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #4374ED |
| RGB | rgb(67, 116, 237) |
| HSL | hsl(223, 83%, 60%) |
| OKLCH | oklch(59.1% 0.19 264.6) |
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 #4374ED | 4.23:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #4374ED | 4.95:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #4374ED text on white | 4.23:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #4374ED text on black | 4.95:1 | AA | Lc -32.9 | 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 600.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A5C0F9
oklch(80.8% 0.086 264.8)
-
Step 400
400
#769EF6
oklch(70.8% 0.137 264.6)
-
Step 500
500
#5382F2
oklch(63% 0.176 264.7)
-
Step 600
600 (this color)
#4374ED
oklch(59.1% 0.19 264.6)
-
Step 700
700
#2C56C3
oklch(49% 0.177 264.7)
-
Step 800
800
#25479E
oklch(42.6% 0.147 264.7)
-
Step 900
900
#223D7D
oklch(37.7% 0.114 264.4)
-
Step 950
950
#142449
oklch(26.9% 0.072 264.5)
#4374ED 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) | #2583F1 | 0.039 |
| Deuteranopia (no green cones) | #0074EB | 0.033 |
| Tritanopia (no blue cones) | #0091A5 | 0.153 |
| Achromatopsia (no color) | #7B7B7B | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4374ED
#4374ED
oklch(59.1% 0.19 264.6)
- #9F7600
#9F7600
oklch(59.1% 0.121 84.2)
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 #4374ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.031
- Royal Blue #4169E1 ΔE 0.032
- Cerulean Blue #056EEE ΔE 0.039
- Neon Blue #4361EE ΔE 0.045
- Cornflower #6A79F7 ΔE 0.050
- Bright Blue #0165FC ΔE 0.059
- Soft Blue #6488EA ΔE 0.067
- Azul #1D5DEC ΔE 0.067
Use #4374ED 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.