#435E73
Closest named color: YInMn Blue (#415A77). oklch(46.9% 0.047 242.4), rgb(67, 94, 115).
Aa
White text reads best on this color (6.80:1).
About this color
#435E73 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.047 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 6.80:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #435E73 |
| RGB | rgb(67, 94, 115) |
| HSL | hsl(206, 26%, 36%) |
| OKLCH | oklch(46.9% 0.047 242.4) |
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 #435E73 | 6.80:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #435E73 | 3.08:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #435E73 text on white | 6.80:1 | AA | Lc 83.4 | Fine for body text |
| #435E73 text on black | 3.08:1 | AA large text | Lc -18.5 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE1
oklch(88.4% 0.013 244.3)
-
Step 300
300
#B4C3CE
oklch(80.9% 0.023 239.5)
-
Step 400
400
#8DA4B6
oklch(70.7% 0.037 241.7)
-
Step 500
500
#718DA4
oklch(63% 0.047 243.4)
-
Step 600
600
#59778F
oklch(55.5% 0.051 242.9)
-
Step 700
700 (this color)
#435E73
oklch(46.9% 0.047 242.4)
-
Step 800
800
#3C5263
oklch(42.7% 0.039 242)
-
Step 900
900
#344451
oklch(37.8% 0.03 243.1)
-
Step 950
950
#1E282F
oklch(27% 0.019 238.9)
#435E73 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) | #555E74 | 0.025 |
| Deuteranopia (no green cones) | #4F5973 | 0.021 |
| Tritanopia (no blue cones) | #316365 | 0.038 |
| Achromatopsia (no color) | #5B5B5B | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #435E73
#435E73
oklch(46.9% 0.047 242.4)
- #6E553F
#6E553F
oklch(46.9% 0.047 62.6)
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 #435E73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Slate #516572 ΔE 0.030
- Dusty Grape #545775 ΔE 0.031
- Denim #3B638C ΔE 0.040
- Dusk #4E5481 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.045
- Petrol #005F6A ΔE 0.052
- Dusky Blue #475F94 ΔE 0.055
Use #435E73 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.