#43687C
Closest named color: Slate (#516572). oklch(49.8% 0.053 232.9), rgb(67, 104, 124).
Aa
White text reads best on this color (5.98:1).
About this color
#43687C is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.053 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.021 away. White text reads best on it, at 5.98:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.50:1 |
| White text | 5.98:1 |
Values
| HEX | #43687C |
| RGB | rgb(67, 104, 124) |
| HSL | hsl(201, 30%, 37%) |
| OKLCH | oklch(49.8% 0.053 232.9) |
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 #43687C | 5.98:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #43687C | 3.50:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #43687C text on white | 5.98:1 | AA | Lc 79.8 | Fine for body text |
| #43687C text on black | 3.50:1 | AA large text | Lc -22.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B1C4CF
oklch(80.9% 0.026 233.1)
-
Step 400
400
#88A6B6
oklch(70.8% 0.041 231.3)
-
Step 500
500
#6A8FA4
oklch(63% 0.052 233.5)
-
Step 600
600
#51798F
oklch(55.5% 0.056 233.2)
-
Step 700
700 (this color)
#43687C
oklch(49.8% 0.053 232.9)
-
Step 800
800
#365363
oklch(42.6% 0.044 233.3)
-
Step 900
900
#2F4551
oklch(37.7% 0.034 232.7)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#43687C 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) | #5E677D | 0.035 |
| Deuteranopia (no green cones) | #56617C | 0.030 |
| Tritanopia (no blue cones) | #2B6D6E | 0.039 |
| Achromatopsia (no color) | #636363 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43687C
#43687C
oklch(49.8% 0.053 232.9)
- #7B5A46
#7B5A46
oklch(49.7% 0.053 52.3)
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 #43687C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.021
- Denim #3B638C ΔE 0.035
- YInMn Blue #415A77 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.043
- Dusty Grape #545775 ΔE 0.051
- Sea Blue #047495 ΔE 0.053
- Dusky Blue #475F94 ΔE 0.054
- Dark Aqua #05696B ΔE 0.054
Use #43687C 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.