#43689B
Closest named color: Muted Blue (#3B719F). oklch(51.3% 0.092 256.7), rgb(67, 104, 155).
Aa
White text reads best on this color (5.68:1).
About this color
#43689B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.092 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.025 away. White text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #43689B |
| RGB | rgb(67, 104, 155) |
| HSL | hsl(215, 40%, 44%) |
| OKLCH | oklch(51.3% 0.092 256.7) |
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 #43689B | 5.68:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #43689B | 3.69:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #43689B text on white | 5.68:1 | AA | Lc 78.3 | Fine for body text |
| #43689B text on black | 3.69:1 | AA large text | Lc -23.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AFC2DE
oklch(80.9% 0.045 258)
-
Step 400
400
#84A3CD
oklch(70.8% 0.071 256.1)
-
Step 500
500
#658BC0
oklch(63% 0.091 256.8)
-
Step 600
600
#4C75AC
oklch(55.7% 0.098 256.1)
-
Step 700
700 (this color)
#43689B
oklch(51.3% 0.092 256.7)
-
Step 800
800
#335078
oklch(42.8% 0.075 256.7)
-
Step 900
900
#2C4261
oklch(37.6% 0.06 257)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#43689B 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) | #536B9D | 0.022 |
| Deuteranopia (no green cones) | #48639A | 0.014 |
| Tritanopia (no blue cones) | #04737A | 0.081 |
| Achromatopsia (no color) | #676767 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43689B
#43689B
oklch(51.3% 0.092 256.7)
- #845F20
#845F20
oklch(51.2% 0.092 77)
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 #43689B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.025
- Dusky Blue #475F94 ΔE 0.026
- French Blue #436BAD ΔE 0.028
- Denim #3B638C ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.033
- Dull Blue #49759C ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.041
- Ocean Blue #03719C ΔE 0.042
Use #43689B 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.