#2F4784
Closest named color: Cobalt (#1E488F). oklch(41.2% 0.106 265.8), rgb(47, 71, 132).
Aa
White text reads best on this color (8.91:1).
About this color
#2F4784 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.106 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.024 away. White text reads best on it, at 8.91:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #2F4784 |
| RGB | rgb(47, 71, 132) |
| HSL | hsl(223, 47%, 35%) |
| OKLCH | oklch(41.2% 0.106 265.8) |
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 #2F4784 | 8.91:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #2F4784 | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #2F4784 text on white | 8.91:1 | AAA | Lc 90.2 | Preferred for body text |
| #2F4784 text on black | 2.35:1 | Fails | Lc -12.1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#AEC0EA
oklch(80.8% 0.063 266.8)
-
Step 400
400
#839FDF
oklch(70.6% 0.099 265.8)
-
Step 500
500
#6586D6
oklch(63.1% 0.127 265.9)
-
Step 600
600
#4C6EC3
oklch(55.5% 0.138 265.7)
-
Step 700
700
#3E5CA9
oklch(49.2% 0.128 265.9)
-
Step 800
800 (this color)
#2F4784
oklch(41.2% 0.106 265.8)
-
Step 900
900
#2C3F6D
oklch(37.6% 0.083 265.7)
-
Step 950
950
#1A2540
oklch(26.9% 0.053 266.2)
#2F4784 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) | #2A4E86 | 0.020 |
| Deuteranopia (no green cones) | #1D4683 | 0.019 |
| Tritanopia (no blue cones) | #00555F | 0.090 |
| Achromatopsia (no color) | #4A4A4A | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4784
#2F4784
oklch(41.2% 0.106 265.8)
- #5F4700
#5F4700
oklch(41.2% 0.084 86.4)
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 #2F4784, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.024
- Light Navy #155084 ΔE 0.031
- Dusk Blue #26538D ΔE 0.035
- Twilight Blue #0A437A ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.045
- Blueberry #464196 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.055
Use #2F4784 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.