#43659F
Closest named color: Dusky Blue (#475F94). oklch(50.8% 0.101 260.5), rgb(67, 101, 159).
Aa
White text reads best on this color (5.83:1).
About this color
#43659F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.101 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.022 away. White text reads best on it, at 5.83:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.60:1 |
| White text | 5.83:1 |
Values
| HEX | #43659F |
| RGB | rgb(67, 101, 159) |
| HSL | hsl(218, 41%, 44%) |
| OKLCH | oklch(50.8% 0.101 260.5) |
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 #43659F | 5.83:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #43659F | 3.60:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #43659F text on white | 5.83:1 | AA | Lc 79.0 | Fine for body text |
| #43659F text on black | 3.60:1 | AA large text | Lc -22.8 | 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 700.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AFC2E1
oklch(81% 0.049 260.2)
-
Step 400
400
#85A2D2
oklch(70.8% 0.078 260.3)
-
Step 500
500
#668AC6
oklch(63.2% 0.1 260.3)
-
Step 600
600
#4D73B2
oklch(55.6% 0.108 260.1)
-
Step 700
700 (this color)
#43659F
oklch(50.8% 0.101 260.5)
-
Step 800
800
#344F7C
oklch(42.8% 0.082 260.2)
-
Step 900
900
#2D4264
oklch(37.8% 0.064 259.7)
-
Step 950
950
#1B273B
oklch(27.2% 0.041 260.3)
#43659F 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) | #4D6AA1 | 0.020 |
| Deuteranopia (no green cones) | #41619E | 0.012 |
| Tritanopia (no blue cones) | #00727A | 0.090 |
| Achromatopsia (no color) | #656565 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43659F
#43659F
oklch(50.8% 0.101 260.5)
- #835E0C
#835E0C
oklch(50.8% 0.101 80.5)
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 #43659F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.022
- French Blue #436BAD ΔE 0.025
- Denim #3B638C ΔE 0.033
- Muted Blue #3B719F ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.035
- Mid Blue #276AB3 ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.039
- Peacock Blue #016795 ΔE 0.046
Use #43659F 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.