#4F71D0
Closest named color: Royal Blue (#4169E1). oklch(57.1% 0.151 266.8), rgb(79, 113, 208).
Aa
Black text reads best on this color (4.60:1).
About this color
#4F71D0 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.151 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.039 away. Black text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.60:1 |
| White text | 4.55:1 |
Values
| HEX | #4F71D0 |
| RGB | rgb(79, 113, 208) |
| HSL | hsl(224, 58%, 56%) |
| OKLCH | oklch(57.1% 0.151 266.8) |
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 #4F71D0 | 4.55:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #4F71D0 | 4.60:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #4F71D0 text on white | 4.55:1 | AA | Lc 71.4 | Content text, not long reading |
| #4F71D0 text on black | 4.60:1 | AA | Lc -30.3 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ADC0EE
oklch(80.9% 0.069 267.3)
-
Step 400
400
#829EE5
oklch(70.7% 0.109 267.2)
-
Step 500
500
#6385DD
oklch(63.2% 0.138 266.6)
-
Step 600
600 (this color)
#4F71D0
oklch(57.1% 0.151 266.8)
-
Step 700
700
#3C5AB0
oklch(49.1% 0.141 266.7)
-
Step 800
800
#324A8E
oklch(42.7% 0.116 266.8)
-
Step 900
900
#2C3E71
oklch(37.6% 0.09 267.3)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#4F71D0 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) | #437CD4 | 0.029 |
| Deuteranopia (no green cones) | #2E70CE | 0.031 |
| Tritanopia (no blue cones) | #008796 | 0.130 |
| Achromatopsia (no color) | #767676 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F71D0
#4F71D0
oklch(57.1% 0.151 266.8)
- #957200
#957200
oklch(57.1% 0.117 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 #4F71D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.039
- Windows Blue #3778BF ΔE 0.041
- Dark Periwinkle #665FD1 ΔE 0.050
- French Blue #436BAD ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.062
- Mid Blue #276AB3 ΔE 0.063
- Iris #6258C4 ΔE 0.064
- Light Indigo #6D5ACF ΔE 0.065
Use #4F71D0 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.