#2F436A
Closest named color: Dark Grey Blue (#29465B). oklch(38.5% 0.072 262.8), rgb(47, 67, 106).
Aa
White text reads best on this color (9.85:1).
About this color
#2F436A is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.072 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 9.85:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #2F436A |
| RGB | rgb(47, 67, 106) |
| HSL | hsl(220, 39%, 30%) |
| OKLCH | oklch(38.5% 0.072 262.8) |
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 #2F436A | 9.85:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #2F436A | 2.13:1 | Fails | Lc 11.2 | Not readable |
| #2F436A text on white | 9.85:1 | AAA | Lc 92.7 | Preferred for body text |
| #2F436A text on black | 2.13:1 | Fails | Lc -9.7 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFDAED
oklch(88.6% 0.029 261.5)
-
Step 300
300
#AEC1E4
oklch(80.8% 0.054 262.6)
-
Step 400
400
#84A1D7
oklch(70.8% 0.086 262.5)
-
Step 500
500
#6688CC
oklch(63% 0.11 263.3)
-
Step 600
600
#4D71B9
oklch(55.6% 0.12 263)
-
Step 700
700
#3E5F9F
oklch(49.2% 0.11 262.5)
-
Step 800
800
#334D81
oklch(42.6% 0.092 263)
-
Step 900
900 (this color)
#2F436A
oklch(38.5% 0.072 262.8)
-
Step 950
950
#1A263D
oklch(27% 0.046 262.7)
#2F436A 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) | #34466C | 0.012 |
| Deuteranopia (no green cones) | #2D4169 | 0.007 |
| Tritanopia (no blue cones) | #114B51 | 0.064 |
| Achromatopsia (no color) | #434343 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F436A
#2F436A
oklch(38.5% 0.072 262.8)
- #56400D
#56400D
oklch(38.6% 0.072 83.7)
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 #2F436A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Twilight Blue #0A437A ΔE 0.040
- Charcoal #264653 ΔE 0.046
- Light Navy #155084 ΔE 0.053
- Marine Blue #01386A ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.060
Use #2F436A 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.