#4F78F5
Closest named color: Cornflower (#6A79F7). oklch(61% 0.193 266.9), rgb(79, 120, 245).
Aa
Black text reads best on this color (5.33:1).
About this color
#4F78F5 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.193 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.032 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #4F78F5 |
| RGB | rgb(79, 120, 245) |
| HSL | hsl(225, 89%, 64%) |
| OKLCH | oklch(61% 0.193 266.9) |
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 #4F78F5 | 3.93:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #4F78F5 | 5.33:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #4F78F5 text on white | 3.93:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #4F78F5 text on black | 5.33:1 | AA | Lc -35.3 | 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 500.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A5BFFE
oklch(80.8% 0.094 267)
-
Step 400
400
#769BFE
oklch(70.6% 0.151 267.1)
-
Step 500
500 (this color)
#4F78F5
oklch(61% 0.193 266.9)
-
Step 600
600
#3C64EB
oklch(55.6% 0.209 266.8)
-
Step 700
700
#2F52CD
oklch(49.2% 0.194 266.7)
-
Step 800
800
#2744A6
oklch(42.8% 0.162 266.7)
-
Step 900
900
#233B83
oklch(37.8% 0.125 266.5)
-
Step 950
950
#15234D
oklch(27% 0.08 267.1)
#4F78F5 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) | #2988F9 | 0.044 |
| Deuteranopia (no green cones) | #0079F2 | 0.043 |
| Tritanopia (no blue cones) | #0096AB | 0.158 |
| Achromatopsia (no color) | #808080 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F78F5
#4F78F5
oklch(61% 0.193 266.9)
- #A37D00
#A37D00
oklch(61% 0.125 87.2)
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 #4F78F5, closest first.
No curated palette has a color within ΔE 0.04 of #4F78F5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.032
- Clear Blue #247AFD ΔE 0.033
- Royal Blue #4169E1 ΔE 0.051
- Soft Blue #6488EA ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.057
- Neon Blue #4361EE ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.062
- Medium Slate Blue #7B68EE ΔE 0.063
Use #4F78F5 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.