#43657F
Closest named color: Denim (#3B638C). oklch(49.2% 0.057 242.3), rgb(67, 101, 127).
Aa
White text reads best on this color (6.16:1).
About this color
#43657F is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.057 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.025 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #43657F |
| RGB | rgb(67, 101, 127) |
| HSL | hsl(206, 31%, 38%) |
| OKLCH | oklch(49.2% 0.057 242.3) |
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 #43657F | 6.16:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #43657F | 3.40:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #43657F text on white | 6.16:1 | AA | Lc 80.7 | Fine for body text |
| #43657F text on black | 3.40:1 | AA large text | Lc -21.2 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE3
oklch(88.6% 0.015 241.8)
-
Step 300
300
#B2C3D1
oklch(80.9% 0.027 242.8)
-
Step 400
400
#89A5BA
oklch(70.8% 0.044 240.7)
-
Step 500
500
#6B8EA9
oklch(63.1% 0.057 241.9)
-
Step 600
600
#527895
oklch(55.6% 0.062 242.1)
-
Step 700
700 (this color)
#43657F
oklch(49.2% 0.057 242.3)
-
Step 800
800
#375267
oklch(42.6% 0.048 242.6)
-
Step 900
900
#304454
oklch(37.7% 0.037 243.1)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#43657F 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) | #5A6580 | 0.030 |
| Deuteranopia (no green cones) | #525F7F | 0.025 |
| Tritanopia (no blue cones) | #296B6E | 0.046 |
| Achromatopsia (no color) | #616161 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43657F
#43657F
oklch(49.2% 0.057 242.3)
- #795A3E
#795A3E
oklch(49.3% 0.058 62.9)
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 #43657F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.025
- Slate #516572 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.043
- Dusty Grape #545775 ΔE 0.043
- Metallic Blue #4F738E ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.050
Use #43657F 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.