#4F71F0
Closest named color: Royal Blue (#4169E1). oklch(59.3% 0.194 268.5), rgb(79, 113, 240).
Aa
Black text reads best on this color (4.95:1).
About this color
#4F71F0 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.194 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.035 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.95:1 |
| White text | 4.24:1 |
Values
| HEX | #4F71F0 |
| RGB | rgb(79, 113, 240) |
| HSL | hsl(227, 84%, 63%) |
| OKLCH | oklch(59.3% 0.194 268.5) |
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 #4F71F0 | 4.24:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #4F71F0 | 4.95:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #4F71F0 text on white | 4.24:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #4F71F0 text on black | 4.95:1 | AA | Lc -32.8 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9FA
oklch(88.6% 0.048 268.4)
-
Step 300
300
#A9BFFA
oklch(80.9% 0.087 268.6)
-
Step 400
400
#7C9BF8
oklch(70.6% 0.141 268.7)
-
Step 500
500
#5D7FF4
oklch(63% 0.179 268.7)
-
Step 600
600 (this color)
#4F71F0
oklch(59.3% 0.194 268.5)
-
Step 700
700
#3753C5
oklch(49.1% 0.18 268.4)
-
Step 800
800
#2E45A0
oklch(42.8% 0.15 268.5)
-
Step 900
900
#283B7F
oklch(37.7% 0.117 268.5)
-
Step 950
950
#17234A
oklch(26.9% 0.074 268.3)
#4F71F0 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) | #1483F4 | 0.052 |
| Deuteranopia (no green cones) | #0074ED | 0.045 |
| Tritanopia (no blue cones) | #008FA6 | 0.158 |
| Achromatopsia (no color) | #7B7B7B | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F71F0
#4F71F0
oklch(59.3% 0.194 268.5)
- #9C7900
#9C7900
oklch(59.4% 0.121 88.3)
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 #4F71F0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.035
- Clear Blue #247AFD ΔE 0.038
- Cornflower #6A79F7 ΔE 0.041
- Neon Blue #4361EE ΔE 0.042
- Cerulean Blue #056EEE ΔE 0.048
- Medium Slate Blue #7B68EE ΔE 0.058
- Bright Blue #0165FC ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.064
Use #4F71F0 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.