#09436A
Closest named color: Twilight Blue (#0A437A). oklch(37% 0.087 244.9), rgb(9, 67, 106).
Aa
White text reads best on this color (10.38:1).
About this color
#09436A is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.087 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.028 away. White text reads best on it, at 10.38:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.02:1 |
| White text | 10.38:1 |
Values
| HEX | #09436A |
| RGB | rgb(9, 67, 106) |
| HSL | hsl(204, 84%, 23%) |
| OKLCH | oklch(37% 0.087 244.9) |
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 #09436A | 10.38:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #09436A | 2.02:1 | Fails | Lc 10.2 | Not readable |
| #09436A text on white | 10.38:1 | AAA | Lc 93.7 | Preferred for body text |
| #09436A text on black | 2.02:1 | Fails | Lc -8.8 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DCF0
oklch(88.4% 0.036 245.7)
-
Step 300
300
#9EC6E8
oklch(80.9% 0.064 244.3)
-
Step 400
400
#66A7DD
oklch(70.7% 0.104 245.1)
-
Step 500
500
#3490D4
oklch(63.1% 0.133 244.9)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900 (this color)
#09436A
oklch(37% 0.087 244.9)
-
Step 950
950
#0B293F
oklch(27.1% 0.054 244.1)
#09436A 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) | #30456C | 0.036 |
| Deuteranopia (no green cones) | #233C69 | 0.026 |
| Tritanopia (no blue cones) | #004D51 | 0.062 |
| Achromatopsia (no color) | #404040 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09436A
#09436A
oklch(37% 0.087 244.9)
- #5D3500
#5D3500
oklch(37% 0.083 65.3)
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 #09436A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.028
- Marine Blue #01386A ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.039
- Charcoal #264653 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.051
- Midnight Green #073B4C ΔE 0.055
- Light Navy #155084 ΔE 0.056
Use #09436A 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.