#2F78EB
Closest named color: Clear Blue (#247AFD). oklch(59.1% 0.188 259.5), rgb(47, 120, 235).
Aa
Black text reads best on this color (5.00:1).
About this color
#2F78EB is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.188 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.027 away. Black text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #2F78EB |
| RGB | rgb(47, 120, 235) |
| HSL | hsl(217, 82%, 55%) |
| OKLCH | oklch(59.1% 0.188 259.5) |
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 #2F78EB | 4.19:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #2F78EB | 5.00:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #2F78EB text on white | 4.19:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #2F78EB text on black | 5.00:1 | AA | Lc -33.3 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A0C2F8
oklch(80.9% 0.085 259.5)
-
Step 400
400
#6CA1F4
oklch(70.8% 0.135 259.1)
-
Step 500
500
#4486F0
oklch(63.1% 0.173 259.5)
-
Step 600
600 (this color)
#2F78EB
oklch(59.1% 0.188 259.5)
-
Step 700
700
#165AC2
oklch(49.1% 0.176 259.6)
-
Step 800
800
#154A9C
oklch(42.6% 0.145 259.5)
-
Step 900
900
#183F7C
oklch(37.6% 0.113 259.2)
-
Step 950
950
#0F2549
oklch(26.9% 0.073 259.8)
#2F78EB 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) | #3285EF | 0.034 |
| Deuteranopia (no green cones) | #0074E9 | 0.022 |
| Tritanopia (no blue cones) | #0094A6 | 0.146 |
| Achromatopsia (no color) | #7C7C7C | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F78EB
#2F78EB
oklch(59.1% 0.188 259.5)
- #A47300
#A47300
oklch(59% 0.123 79)
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 #2F78EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.027
- Cerulean Blue #056EEE ΔE 0.034
- Royal Blue #4169E1 ΔE 0.039
- Neon Blue #4361EE ΔE 0.055
- Bright Blue #0165FC ΔE 0.059
- Cornflower #6A79F7 ΔE 0.062
- Dodger Blue #1E90FF ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.065
Use #2F78EB 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.