#64689D
Closest named color: French Blue (#436BAD). oklch(53.6% 0.083 279.9), rgb(100, 104, 157).
Aa
White text reads best on this color (5.23:1).
About this color
#64689D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.083 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.046 away. White text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.00:1 |
| White text | 5.23:1 |
Values
| HEX | #64689D |
| RGB | rgb(100, 104, 157) |
| HSL | hsl(236, 23%, 50%) |
| OKLCH | oklch(53.6% 0.083 279.9) |
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 #64689D | 5.23:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #64689D | 4.00:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #64689D text on white | 5.23:1 | AA | Lc 76.0 | Fine for body text |
| #64689D text on black | 4.00:1 | AA large text | Lc -25.8 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BBBFD9
oklch(81% 0.037 278.6)
-
Step 400
400
#999DC6
oklch(70.7% 0.06 280.4)
-
Step 500
500
#8085B7
oklch(63.2% 0.075 279.6)
-
Step 600
600 (this color)
#64689D
oklch(53.6% 0.083 279.9)
-
Step 700
700
#585C8C
oklch(49.2% 0.077 279.5)
-
Step 800
800
#484B71
oklch(42.7% 0.063 279.9)
-
Step 900
900
#3C3F5C
oklch(37.8% 0.05 279.2)
-
Step 950
950
#232536
oklch(27% 0.032 278.9)
#64689D 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) | #576E9F | 0.022 |
| Deuteranopia (no green cones) | #546A9C | 0.022 |
| Tritanopia (no blue cones) | #54727B | 0.073 |
| Achromatopsia (no color) | #6C6C6C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64689D
#64689D
oklch(53.6% 0.083 279.9)
- #796F31
#796F31
oklch(53.7% 0.083 100.3)
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 #64689D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.046
- Dull Blue #49759C ΔE 0.048
- Dusky Blue #475F94 ΔE 0.051
- Muted Blue #3B719F ΔE 0.052
- Metallic Blue #4F738E ΔE 0.052
- Dark Lavender #856798 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.052
- Dusty Purple #825F87 ΔE 0.057
Use #64689D 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.