#4F71D9
Closest named color: Royal Blue (#4169E1). oklch(57.7% 0.164 267.5), rgb(79, 113, 217).
Aa
Black text reads best on this color (4.69:1).
About this color
#4F71D9 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.164 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.030 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #4F71D9 |
| RGB | rgb(79, 113, 217) |
| HSL | hsl(225, 64%, 58%) |
| OKLCH | oklch(57.7% 0.164 267.5) |
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 #4F71D9 | 4.47:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #4F71D9 | 4.69:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #4F71D9 text on white | 4.47:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #4F71D9 text on black | 4.69:1 | AA | Lc -30.9 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#809DEA
oklch(70.6% 0.118 267.6)
-
Step 500
500
#6183E4
oklch(63% 0.151 267.4)
-
Step 600
600 (this color)
#4F71D9
oklch(57.7% 0.164 267.5)
-
Step 700
700
#3B58B6
oklch(49.1% 0.153 267.6)
-
Step 800
800
#314993
oklch(42.8% 0.125 267.4)
-
Step 900
900
#2B3D75
oklch(37.6% 0.098 268)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#4F71D9 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) | #3B7EDD | 0.035 |
| Deuteranopia (no green cones) | #1E71D7 | 0.039 |
| Tritanopia (no blue cones) | #00899A | 0.138 |
| Achromatopsia (no color) | #777777 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F71D9
#4F71D9
oklch(57.7% 0.164 267.5)
- #977400
#977400
oklch(57.7% 0.118 87.5)
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 #4F71D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.050
- Windows Blue #3778BF ΔE 0.052
- Neon Blue #4361EE ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.056
- Cornflower #6A79F7 ΔE 0.060
- Clear Blue #247AFD ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.063
Use #4F71D9 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.