#5553E0
Closest named color: Warm Blue (#4B57DB). oklch(53% 0.208 277.2), rgb(85, 83, 224).
Aa
White text reads best on this color (5.67:1).
About this color
#5553E0 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.208 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.017 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #5553E0 |
| RGB | rgb(85, 83, 224) |
| HSL | hsl(241, 69%, 60%) |
| OKLCH | oklch(53% 0.208 277.2) |
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 #5553E0 | 5.67:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #5553E0 | 3.69:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #5553E0 text on white | 5.67:1 | AA | Lc 77.8 | Fine for body text |
| #5553E0 text on black | 3.69:1 | AA large text | Lc -23.9 | Dividers and decoration only |
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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FC
oklch(88.6% 0.052 276.9)
-
Step 300
300
#B1BBFD
oklch(80.8% 0.094 277.4)
-
Step 400
400
#8A95FC
oklch(70.6% 0.15 277.2)
-
Step 500
500
#7077FA
oklch(63.1% 0.192 277.1)
-
Step 600
600 (this color)
#5553E0
oklch(53% 0.208 277.2)
-
Step 700
700
#4C4ACB
oklch(49.2% 0.194 277.2)
-
Step 800
800
#3E3EA4
oklch(42.8% 0.16 277.2)
-
Step 900
900
#343682
oklch(37.7% 0.125 277.4)
-
Step 950
950
#1E204C
oklch(26.9% 0.08 277.6)
#5553E0 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) | #006DE4 | 0.075 |
| Deuteranopia (no green cones) | #0061DD | 0.065 |
| Tritanopia (no blue cones) | #007792 | 0.174 |
| Achromatopsia (no color) | #676767 | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5553E0
#5553E0
oklch(53% 0.208 277.2)
- #7E6B00
#7E6B00
oklch(53% 0.109 96.8)
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 #5553E0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.017
- Neon Blue #4361EE ΔE 0.040
- Dark Periwinkle #665FD1 ΔE 0.046
- Slate Blue #6A5ACD ΔE 0.048
- Light Indigo #6D5ACF ΔE 0.050
- Iris #6258C4 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.052
- Purpley Blue #5F34E7 ΔE 0.055
Use #5553E0 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.