#2F3E94
Closest named color: Cobalt (#1E488F). oklch(40.5% 0.142 271.1), rgb(47, 62, 148).
Aa
White text reads best on this color (9.38:1).
About this color
#2F3E94 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.142 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 9.38:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.23:1 |
| White text | 9.38:1 |
Values
| HEX | #2F3E94 |
| RGB | rgb(47, 62, 148) |
| HSL | hsl(231, 52%, 38%) |
| OKLCH | oklch(40.5% 0.142 271.1) |
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 #2F3E94 | 9.38:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #2F3E94 | 2.23:1 | Fails | Lc 12.7 | Not readable |
| #2F3E94 text on white | 9.38:1 | AAA | Lc 91.3 | Preferred for body text |
| #2F3E94 text on black | 2.23:1 | Fails | Lc -11.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#ADBEF7
oklch(80.9% 0.083 271.6)
-
Step 400
400
#829BF3
oklch(70.7% 0.132 270.7)
-
Step 500
500
#657FEF
oklch(63.2% 0.17 271)
-
Step 600
600
#4E65DD
oklch(55.6% 0.184 271)
-
Step 700
700
#4053C0
oklch(49.1% 0.171 271.2)
-
Step 800
800 (this color)
#2F3E94
oklch(40.5% 0.142 271.1)
-
Step 900
900
#2D3B7B
oklch(37.7% 0.11 271)
-
Step 950
950
#1A2348
oklch(27% 0.07 270.8)
#2F3E94 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) | #004B97 | 0.042 |
| Deuteranopia (no green cones) | #004292 | 0.035 |
| Tritanopia (no blue cones) | #005362 | 0.118 |
| Achromatopsia (no color) | #464646 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3E94
#2F3E94
oklch(40.5% 0.142 271.1)
- #5A4700
#5A4700
oklch(40.6% 0.083 91.2)
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 #2F3E94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Blueberry #464196 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.040
- Sapphire #2138AB ΔE 0.044
- Twilight Blue #0A437A ΔE 0.057
- Dusk Blue #26538D ΔE 0.060
- Light Navy #155084 ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.075
Use #2F3E94 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.