#2F43A0
Closest named color: Blueberry (#464196). oklch(42.5% 0.152 269.6), rgb(47, 67, 160).
Aa
White text reads best on this color (8.63:1).
About this color
#2F43A0 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.152 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.035 away. White text reads best on it, at 8.63:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #2F43A0 |
| RGB | rgb(47, 67, 160) |
| HSL | hsl(229, 55%, 41%) |
| OKLCH | oklch(42.5% 0.152 269.6) |
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 #2F43A0 | 8.63:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #2F43A0 | 2.43:1 | Fails | Lc 14.8 | Not readable |
| #2F43A0 text on white | 8.63:1 | AAA | Lc 89.2 | Fine for body text |
| #2F43A0 text on black | 2.43:1 | Fails | Lc -13.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FB
oklch(88.4% 0.05 270.4)
-
Step 300
300
#AABFFB
oklch(81% 0.088 269.4)
-
Step 400
400
#7D9BF9
oklch(70.8% 0.142 269.2)
-
Step 500
500
#5F7EF6
oklch(63.1% 0.182 269.7)
-
Step 600
600
#4864E5
oklch(55.7% 0.198 269.6)
-
Step 700
700
#3A52C7
oklch(49.2% 0.184 269.5)
-
Step 800
800 (this color)
#2F43A0
oklch(42.5% 0.152 269.6)
-
Step 900
900
#293A80
oklch(37.6% 0.12 269.6)
-
Step 950
950
#18234B
oklch(27.1% 0.075 269.3)
#2F43A0 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) | #0051A3 | 0.042 |
| Deuteranopia (no green cones) | #00479E | 0.032 |
| Tritanopia (no blue cones) | #005A6B | 0.123 |
| Achromatopsia (no color) | #4C4C4C | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F43A0
#2F43A0
oklch(42.5% 0.152 269.6)
- #614B00
#614B00
oklch(42.4% 0.087 89.3)
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 #2F43A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.035
- Cobalt #1E488F ΔE 0.036
- Sapphire #2138AB ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.049
- Dusk Blue #26538D ΔE 0.056
- Blue Blue #2242C7 ΔE 0.063
- Light Navy #155084 ΔE 0.064
- Majorelle Blue #3F37C9 ΔE 0.071
Use #2F43A0 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.