#5372EC
Closest named color: Royal Blue (#4169E1). oklch(59.4% 0.187 269.3), rgb(83, 114, 236).
Aa
Black text reads best on this color (4.98:1).
About this color
#5372EC is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.187 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.036 away. Black text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #5372EC |
| RGB | rgb(83, 114, 236) |
| HSL | hsl(228, 80%, 63%) |
| OKLCH | oklch(59.4% 0.187 269.3) |
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 #5372EC | 4.21:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #5372EC | 4.98:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #5372EC text on white | 4.21:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #5372EC text on black | 4.98:1 | AA | Lc -33.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CBD8FC
oklch(88.4% 0.052 269.6)
-
Step 300
300
#A9BFFD
oklch(81% 0.091 269.2)
-
Step 400
400
#7C9AFB
oklch(70.6% 0.146 269.4)
-
Step 500
500 (this color)
#5372EC
oklch(59.4% 0.187 269.3)
-
Step 600
600
#4663E8
oklch(55.6% 0.203 269.3)
-
Step 700
700
#3851CA
oklch(49.1% 0.189 269.2)
-
Step 800
800
#2E43A3
oklch(42.7% 0.157 269.2)
-
Step 900
900
#283A81
oklch(37.7% 0.122 269.1)
-
Step 950
950
#18234C
oklch(27.1% 0.077 269.4)
#5372EC 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) | #2583F0 | 0.049 |
| Deuteranopia (no green cones) | #0075EA | 0.049 |
| Tritanopia (no blue cones) | #008FA4 | 0.156 |
| Achromatopsia (no color) | #7B7B7B | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5372EC
#5372EC
oklch(59.4% 0.187 269.3)
- #9B7A00
#9B7A00
oklch(59.5% 0.121 89.7)
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 #5372EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.036
- Cornflower #6A79F7 ΔE 0.038
- Clear Blue #247AFD ΔE 0.044
- Neon Blue #4361EE ΔE 0.047
- Cerulean Blue #056EEE ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.060
- Soft Blue #6488EA ΔE 0.063
Use #5372EC 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.