#435366
Closest named color: YInMn Blue (#415A77). oklch(43.6% 0.037 253), rgb(67, 83, 102).
Aa
White text reads best on this color (7.87:1).
About this color
#435366 is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.037 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.030 away. White text reads best on it, at 7.87:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #435366 |
| RGB | rgb(67, 83, 102) |
| HSL | hsl(213, 21%, 33%) |
| OKLCH | oklch(43.6% 0.037 253) |
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 #435366 | 7.87:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #435366 | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #435366 text on white | 7.87:1 | AAA | Lc 87.3 | Fine for body text |
| #435366 text on black | 2.66:1 | Fails | Lc -14.8 | Not readable |
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 800.
-
Step 50
50
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4DAE1
oklch(88.6% 0.012 252.1)
-
Step 300
300
#B7C2CF
oklch(81% 0.022 252.5)
-
Step 400
400
#92A2B6
oklch(70.6% 0.034 254.1)
-
Step 500
500
#778CA4
oklch(63.2% 0.044 251.9)
-
Step 600
600
#5F7590
oklch(55.5% 0.05 253.8)
-
Step 700
700
#4F637A
oklch(49.2% 0.044 252.2)
-
Step 800
800 (this color)
#435366
oklch(43.6% 0.037 253)
-
Step 900
900
#374351
oklch(37.8% 0.029 252.5)
-
Step 950
950
#20272F
oklch(26.9% 0.018 251.9)
#435366 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) | #4C5467 | 0.014 |
| Deuteranopia (no green cones) | #485066 | 0.011 |
| Tritanopia (no blue cones) | #385759 | 0.033 |
| Achromatopsia (no color) | #525252 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #435366
#435366
oklch(43.6% 0.037 253)
- #5E4F3B
#5E4F3B
oklch(43.7% 0.037 74.6)
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 #435366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.030
- Dusty Grape #545775 ΔE 0.038
- Dusk #4E5481 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.049
- Petrol #005F6A ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.058
- Slate #516572 ΔE 0.060
Use #435366 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.