#5B65C0
Closest named color: Iris (#6258C4). oklch(54.4% 0.141 276), rgb(91, 101, 192).
Aa
White text reads best on this color (5.16:1).
About this color
#5B65C0 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.141 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.034 away. White text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 4.06:1 |
| White text | 5.16:1 |
Values
| HEX | #5B65C0 |
| RGB | rgb(91, 101, 192) |
| HSL | hsl(234, 44%, 55%) |
| OKLCH | oklch(54.4% 0.141 276) |
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 #5B65C0 | 5.16:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #5B65C0 | 4.06:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #5B65C0 text on white | 5.16:1 | AA | Lc 75.4 | Fine for body text |
| #5B65C0 text on black | 4.06:1 | AA large text | Lc -26.4 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B5BEEA
oklch(80.9% 0.063 275.9)
-
Step 400
400
#8F9BE0
oklch(70.7% 0.102 275.9)
-
Step 500
500
#7581D7
oklch(63.2% 0.13 276)
-
Step 600
600 (this color)
#5B65C0
oklch(54.4% 0.141 276)
-
Step 700
700
#4E57A9
oklch(49.1% 0.13 275.8)
-
Step 800
800
#404789
oklch(42.6% 0.108 276.2)
-
Step 900
900
#363C6E
oklch(37.7% 0.085 276.3)
-
Step 950
950
#1F2440
oklch(27% 0.052 274.7)
#5B65C0 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) | #3C71C3 | 0.043 |
| Deuteranopia (no green cones) | #3169BE | 0.046 |
| Tritanopia (no blue cones) | #2E7989 | 0.124 |
| Achromatopsia (no color) | #6D6D6D | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B65C0
#5B65C0
oklch(54.4% 0.141 276)
- #836F00
#836F00
oklch(54.4% 0.112 96.6)
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 #5B65C0, closest first.
No curated palette has a color within ΔE 0.04 of #5B65C0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.034
- Dark Periwinkle #665FD1 ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.044
- French Blue #436BAD ΔE 0.046
- Royal Blue #4169E1 ΔE 0.057
- Mid Blue #276AB3 ΔE 0.059
- Windows Blue #3778BF ΔE 0.059
Use #5B65C0 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.