#837FCC
Closest named color: Deep Lilac (#966EBD). oklch(63.2% 0.114 285), rgb(131, 127, 204).
Aa
Black text reads best on this color (5.87:1).
About this color
#837FCC is a medium-light, moderately saturated purple. In OKLCH its lightness is 63%, its chroma 0.114 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Lilac (#966EBD), ΔE 0.050 away. Black text reads best on it, at 5.87:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Deep Lilac (#966EBD) |
| Black text | 5.87:1 |
| White text | 3.57:1 |
Values
| HEX | #837FCC |
| RGB | rgb(131, 127, 204) |
| HSL | hsl(243, 43%, 65%) |
| OKLCH | oklch(63.2% 0.114 285) |
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 #837FCC | 3.57:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #837FCC | 5.87:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #837FCC text on white | 3.57:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #837FCC text on black | 5.87:1 | AA | Lc -38.4 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7ED
oklch(88.5% 0.03 283.7)
-
Step 300
300
#BCBCE4
oklch(80.8% 0.056 285.1)
-
Step 400
400
#9A99D7
oklch(70.7% 0.09 284.6)
-
Step 500
500 (this color)
#837FCC
oklch(63.2% 0.114 285)
-
Step 600
600
#6D67B8
oklch(55.6% 0.123 285)
-
Step 700
700
#5B559F
oklch(49.1% 0.116 285)
-
Step 800
800
#4A4681
oklch(42.7% 0.096 284.7)
-
Step 900
900
#3E3B67
oklch(37.7% 0.074 285.4)
-
Step 950
950
#24233D
oklch(27.1% 0.048 284.5)
#837FCC 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) | #678ACF | 0.043 |
| Deuteranopia (no green cones) | #6485CA | 0.043 |
| Tritanopia (no blue cones) | #708E9C | 0.098 |
| Achromatopsia (no color) | #878787 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #837FCC
#837FCC
oklch(63.2% 0.114 285)
- #948D2F
#948D2F
oklch(63.1% 0.114 105.1)
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 #837FCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Lilac #966EBD ΔE 0.050
- Medium Purple #9370DB ΔE 0.052
- Perrywinkle #8F8CE7 ΔE 0.052
- Soft Blue #6488EA ΔE 0.058
- Wisteria #A87DC2 ΔE 0.058
- Faded Blue #658CBB ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.068
- Soft Purple #A66FB5 ΔE 0.068
Use #837FCC 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.