#4381D7
Closest named color: Water Blue (#0E87CC). oklch(60.4% 0.146 257.1), rgb(67, 129, 215).
Aa
Black text reads best on this color (5.36:1).
About this color
#4381D7 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.146 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.037 away. Black text reads best on it, at 5.36:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.36:1 |
| White text | 3.91:1 |
Values
| HEX | #4381D7 |
| RGB | rgb(67, 129, 215) |
| HSL | hsl(215, 65%, 55%) |
| OKLCH | oklch(60.4% 0.146 257.1) |
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 #4381D7 | 3.91:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #4381D7 | 5.36:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #4381D7 text on white | 3.91:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #4381D7 text on black | 5.36:1 | AA | Lc -35.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A4C3EF
oklch(81% 0.071 257.1)
-
Step 400
400
#72A2E7
oklch(70.6% 0.114 257.4)
-
Step 500
500 (this color)
#4381D7
oklch(60.4% 0.146 257.1)
-
Step 600
600
#2C71CE
oklch(55.5% 0.16 257.1)
-
Step 700
700
#1F5EB2
oklch(49% 0.148 257.2)
-
Step 800
800
#1C4E90
oklch(42.8% 0.121 256.8)
-
Step 900
900
#1D4173
oklch(37.7% 0.095 257.2)
-
Step 950
950
#122643
oklch(26.9% 0.06 257.7)
#4381D7 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) | #5988DA | 0.031 |
| Deuteranopia (no green cones) | #427AD5 | 0.019 |
| Tritanopia (no blue cones) | #0095A1 | 0.117 |
| Achromatopsia (no color) | #818181 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4381D7
#4381D7
oklch(60.4% 0.146 257.1)
- #AB7600
#AB7600
oklch(60.5% 0.126 77.4)
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 #4381D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.038
- Windows Blue #3778BF ΔE 0.044
- Soft Blue #6488EA ΔE 0.050
- Cool Blue #4984B8 ΔE 0.051
- Steel Blue #4682B4 ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.061
- Clear Blue #247AFD ΔE 0.065
Use #4381D7 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.