#378FF2
Closest named color: Dodger Blue (#1E90FF). oklch(64.7% 0.17 254.1), rgb(55, 143, 242).
Aa
Black text reads best on this color (6.37:1).
About this color
#378FF2 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.170 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.021 away. Black text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.37:1 |
| White text | 3.29:1 |
Values
| HEX | #378FF2 |
| RGB | rgb(55, 143, 242) |
| HSL | hsl(212, 88%, 58%) |
| OKLCH | oklch(64.7% 0.17 254.1) |
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 #378FF2 | 3.29:1 | AA large text | Lc -65.3 | Content text, not long reading |
| Black text on #378FF2 | 6.37:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #378FF2 text on white | 3.29:1 | AA large text | Lc 59.9 | Large or bold text, headings |
| #378FF2 text on black | 6.37:1 | AA | Lc -41.8 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F6
oklch(80.9% 0.083 254.3)
-
Step 400
400
#63A3F1
oklch(70.6% 0.133 254.3)
-
Step 500
500 (this color)
#378FF2
oklch(64.7% 0.17 254.1)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#0B417A
oklch(37.6% 0.111 254.2)
-
Step 950
950
#0A2748
oklch(27.1% 0.07 254.2)
#378FF2 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) | #5E97F6 | 0.041 |
| Deuteranopia (no green cones) | #3E86F0 | 0.023 |
| Tritanopia (no blue cones) | #00A6B5 | 0.127 |
| Achromatopsia (no color) | #8E8E8E | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378FF2
#378FF2
oklch(64.7% 0.17 254.1)
- #BF7F00
#BF7F00
oklch(64.6% 0.137 73.8)
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 #378FF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.021
- Dark Sky Blue #448EE4 ΔE 0.022
- Chefchaouen Blue #4895EF ΔE 0.023
- Soft Blue #6488EA ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.044
- Clear Blue #247AFD ΔE 0.061
- Water Blue #0E87CC ΔE 0.064
- Cornflower #6A79F7 ΔE 0.068
Use #378FF2 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.