#1D78F1
Closest named color: Clear Blue (#247AFD). oklch(59.1% 0.2 257.9), rgb(29, 120, 241).
Aa
Black text reads best on this color (5.00:1).
About this color
#1D78F1 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.200 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.019 away. Black text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.200) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #1D78F1 |
| RGB | rgb(29, 120, 241) |
| HSL | hsl(214, 88%, 53%) |
| OKLCH | oklch(59.1% 0.2 257.9) |
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 #1D78F1 | 4.19:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #1D78F1 | 5.00:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #1D78F1 text on white | 4.19:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #1D78F1 text on black | 5.00:1 | AA | Lc -33.4 | 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 600.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC3FB
oklch(81% 0.09 258)
-
Step 400
400
#65A1F9
oklch(70.7% 0.144 257.9)
-
Step 500
500
#3886F6
oklch(63% 0.184 258.1)
-
Step 600
600 (this color)
#1D78F1
oklch(59.1% 0.2 257.9)
-
Step 700
700
#005AC4
oklch(49% 0.181 258)
-
Step 800
800
#044AA1
oklch(42.7% 0.154 258)
-
Step 900
900
#103F80
oklch(37.7% 0.121 258)
-
Step 950
950
#0C254B
oklch(26.9% 0.077 258.8)
#1D78F1 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) | #2685F5 | 0.035 |
| Deuteranopia (no green cones) | #0073EF | 0.017 |
| Tritanopia (no blue cones) | #0096A9 | 0.152 |
| Achromatopsia (no color) | #7C7C7C | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D78F1
#1D78F1
oklch(59.1% 0.2 257.9)
- #A57300
#A57300
oklch(59.2% 0.123 78.4)
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 #1D78F1, closest first.
No curated palette has a color within ΔE 0.04 of #1D78F1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.019
- Cerulean Blue #056EEE ΔE 0.028
- Royal Blue #4169E1 ΔE 0.044
- Bright Blue #0165FC ΔE 0.051
- Neon Blue #4361EE ΔE 0.055
- Dodger Blue #1E90FF ΔE 0.064
- Azul #1D5DEC ΔE 0.065
- Cornflower #6A79F7 ΔE 0.068
Use #1D78F1 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.