#5478E4
Closest named color: Cornflower (#6A79F7). oklch(60.1% 0.168 267.3), rgb(84, 120, 228).
Aa
Black text reads best on this color (5.18:1).
About this color
#5478E4 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.168 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.040 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #5478E4 |
| RGB | rgb(84, 120, 228) |
| HSL | hsl(225, 73%, 61%) |
| OKLCH | oklch(60.1% 0.168 267.3) |
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 #5478E4 | 4.05:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #5478E4 | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #5478E4 text on white | 4.05:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #5478E4 text on black | 5.18:1 | AA | Lc -34.2 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300
#A9C0F7
oklch(81% 0.082 266.9)
-
Step 400
400
#7C9DF3
oklch(70.8% 0.132 267.1)
-
Step 500
500 (this color)
#5478E4
oklch(60.1% 0.168 267.3)
-
Step 600
600
#4468DD
oklch(55.6% 0.183 267.3)
-
Step 700
700
#3656C0
oklch(49.2% 0.17 267.1)
-
Step 800
800
#2D479B
oklch(42.8% 0.141 267.2)
-
Step 900
900
#283C7B
oklch(37.6% 0.11 267.6)
-
Step 950
950
#172448
oklch(27% 0.069 266.8)
#5478E4 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) | #4185E8 | 0.035 |
| Deuteranopia (no green cones) | #2478E2 | 0.039 |
| Tritanopia (no blue cones) | #0091A3 | 0.142 |
| Achromatopsia (no color) | #7E7E7E | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5478E4
#5478E4
oklch(60.1% 0.168 267.3)
- #A07B00
#A07B00
oklch(60.2% 0.123 87.4)
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 #5478E4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.040
- Royal Blue #4169E1 ΔE 0.046
- Soft Blue #6488EA ΔE 0.048
- Clear Blue #247AFD ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.062
- Medium Slate Blue #7B68EE ΔE 0.063
- Neon Blue #4361EE ΔE 0.065
Use #5478E4 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.