#477BE1
Closest named color: Royal Blue (#4169E1). oklch(59.9% 0.165 262.3), rgb(71, 123, 225).
Aa
Black text reads best on this color (5.18:1).
About this color
#477BE1 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.165 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.047 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #477BE1 |
| RGB | rgb(71, 123, 225) |
| HSL | hsl(220, 72%, 58%) |
| OKLCH | oklch(59.9% 0.165 262.3) |
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 #477BE1 | 4.04:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #477BE1 | 5.18:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #477BE1 text on white | 4.04:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #477BE1 text on black | 5.18:1 | AA | Lc -34.3 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A5C1F6
oklch(80.9% 0.081 263)
-
Step 400
400
#749FF1
oklch(70.6% 0.13 262.5)
-
Step 500
500 (this color)
#477BE1
oklch(59.9% 0.165 262.3)
-
Step 600
600
#356CDA
oklch(55.6% 0.179 262.3)
-
Step 700
700
#2859BD
oklch(49% 0.167 262.4)
-
Step 800
800
#224A99
oklch(42.8% 0.137 262.1)
-
Step 900
900
#203E7A
oklch(37.6% 0.108 262.4)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#477BE1 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) | #4786E5 | 0.029 |
| Deuteranopia (no green cones) | #2978DF | 0.026 |
| Tritanopia (no blue cones) | #0093A3 | 0.134 |
| Achromatopsia (no color) | #7E7E7E | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477BE1
#477BE1
oklch(59.9% 0.165 262.3)
- #A47700
#A47700
oklch(59.9% 0.123 82.1)
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 #477BE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.047
- Clear Blue #247AFD ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.050
- Soft Blue #6488EA ΔE 0.050
- Cornflower #6A79F7 ΔE 0.052
- Windows Blue #3778BF ΔE 0.055
- Water Blue #0E87CC ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.058
Use #477BE1 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.