#691CA3
Closest named color: Grape (#7209B7). oklch(42.7% 0.198 304.7), rgb(105, 28, 163).
Aa
White text reads best on this color (9.14:1).
About this color
#691CA3 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.198 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape (#7209B7), ΔE 0.036 away. White text reads best on it, at 9.14:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.198) |
| Temperature | in between |
| Nearest name | Grape (#7209B7) |
| Black text | 2.29:1 |
| White text | 9.14:1 |
Values
| HEX | #691CA3 |
| RGB | rgb(105, 28, 163) |
| HSL | hsl(274, 71%, 37%) |
| OKLCH | oklch(42.7% 0.198 304.7) |
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 #691CA3 | 9.14:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #691CA3 | 2.29:1 | Fails | Lc 14.2 | Not readable |
| #691CA3 text on white | 9.14:1 | AAA | Lc 89.8 | Fine for body text |
| #691CA3 text on black | 2.29:1 | Fails | Lc -12.4 | Not readable |
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 800.
-
Step 50
50
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#EFE5FC
oklch(93.7% 0.032 305.3)
-
Step 200
200
#E3CFFC
oklch(88.5% 0.065 305.3)
-
Step 300
300
#D1AEFD
oklch(80.9% 0.115 304.3)
-
Step 400
400
#BB7EFC
oklch(70.7% 0.185 304.5)
-
Step 500
500
#AB54F9
oklch(63% 0.237 304.6)
-
Step 600
600
#972DE8
oklch(55.6% 0.256 304.5)
-
Step 700
700
#811ACA
oklch(49.1% 0.239 304.5)
-
Step 800
800 (this color)
#691CA3
oklch(42.7% 0.198 304.7)
-
Step 900
900
#552181
oklch(37.7% 0.153 304.7)
-
Step 950
950
#32154C
oklch(27.1% 0.098 304.9)
#691CA3 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) | #0046A7 | 0.143 |
| Deuteranopia (no green cones) | #0048A0 | 0.145 |
| Tritanopia (no blue cones) | #5E4261 | 0.141 |
| Achromatopsia (no color) | #484848 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #691CA3
#691CA3
oklch(42.7% 0.198 304.7)
- #425800
#425800
oklch(42.6% 0.107 124.6)
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 #691CA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape #7209B7 ΔE 0.036
- Rebecca Purple #663399 ΔE 0.040
- Chrysanthemum #560BAD ΔE 0.049
- Imperial Purple #480CA8 ΔE 0.074
- Purple Blue #5D21D0 ΔE 0.080
- Purple #800080 ΔE 0.081
- Violet Blue #510AC9 ΔE 0.084
- Dark Magenta #8B008B ΔE 0.085
Use #691CA3 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.