#2F47A9
Closest named color: Sapphire (#2138AB). oklch(44% 0.16 268.5), rgb(47, 71, 169).
Aa
White text reads best on this color (8.09:1).
About this color
#2F47A9 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.160 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.041 away. White text reads best on it, at 8.09:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.59:1 |
| White text | 8.09:1 |
Values
| HEX | #2F47A9 |
| RGB | rgb(47, 71, 169) |
| HSL | hsl(228, 56%, 42%) |
| OKLCH | oklch(44% 0.16 268.5) |
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 #2F47A9 | 8.09:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #2F47A9 | 2.59:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #2F47A9 text on white | 8.09:1 | AAA | Lc 87.5 | Fine for body text |
| #2F47A9 text on black | 2.59:1 | Fails | Lc -14.6 | 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
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD9FC
oklch(88.6% 0.051 268.1)
-
Step 300
300
#A7BFFE
oklch(81% 0.093 268.2)
-
Step 400
400
#7A9BFD
oklch(70.8% 0.148 268.4)
-
Step 500
500
#5A7EFB
oklch(63.1% 0.19 268.4)
-
Step 600
600
#4363EA
oklch(55.6% 0.207 268.6)
-
Step 700
700
#3551CC
oklch(49.2% 0.193 268.4)
-
Step 800
800 (this color)
#2F47A9
oklch(44% 0.16 268.5)
-
Step 900
900
#273A83
oklch(37.8% 0.125 268.7)
-
Step 950
950
#17234C
oklch(27.1% 0.077 268.6)
#2F47A9 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) | #0056AC | 0.042 |
| Deuteranopia (no green cones) | #004AA7 | 0.030 |
| Tritanopia (no blue cones) | #005F71 | 0.127 |
| Achromatopsia (no color) | #505050 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F47A9
#2F47A9
oklch(44% 0.16 268.5)
- #674F00
#674F00
oklch(44% 0.09 88.4)
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 #2F47A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.041
- Blueberry #464196 ΔE 0.043
- Cobalt #1E488F ΔE 0.047
- Blue Blue #2242C7 ΔE 0.051
- Dusk Blue #26538D ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.061
- Majorelle Blue #3F37C9 ΔE 0.062
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
Use #2F47A9 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.