#5B59DF
Closest named color: Warm Blue (#4B57DB). oklch(54.4% 0.198 278.2), rgb(91, 89, 223).
Aa
White text reads best on this color (5.33:1).
About this color
#5B59DF is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.198 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.024 away. White text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #5B59DF |
| RGB | rgb(91, 89, 223) |
| HSL | hsl(241, 68%, 61%) |
| OKLCH | oklch(54.4% 0.198 278.2) |
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 #5B59DF | 5.33:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #5B59DF | 3.93:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #5B59DF text on white | 5.33:1 | AA | Lc 76.1 | Fine for body text |
| #5B59DF text on black | 3.93:1 | AA large text | Lc -25.7 | 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
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B3BBFA
oklch(80.8% 0.089 278.6)
-
Step 400
400
#8D96F8
oklch(70.8% 0.143 278.1)
-
Step 500
500
#7378F4
oklch(63.1% 0.182 278.1)
-
Step 600
600 (this color)
#5B59DF
oklch(54.4% 0.198 278.2)
-
Step 700
700
#4E4BC5
oklch(49% 0.184 278.2)
-
Step 800
800
#403FA0
oklch(42.8% 0.153 278.2)
-
Step 900
900
#35377F
oklch(37.8% 0.119 277.8)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#5B59DF 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) | #0071E3 | 0.077 |
| Deuteranopia (no green cones) | #0065DC | 0.070 |
| Tritanopia (no blue cones) | #007A93 | 0.171 |
| Achromatopsia (no color) | #6B6B6B | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B59DF
#5B59DF
oklch(54.4% 0.198 278.2)
- #817000
#817000
oklch(54.5% 0.113 98.7)
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 #5B59DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.024
- Dark Periwinkle #665FD1 ΔE 0.032
- Slate Blue #6A5ACD ΔE 0.036
- Light Indigo #6D5ACF ΔE 0.037
- Neon Blue #4361EE ΔE 0.038
- Iris #6258C4 ΔE 0.043
- Royal Blue #4169E1 ΔE 0.044
- Bluey Purple #6241C7 ΔE 0.062
Use #5B59DF 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.