#2E3F86
Closest named color: Cobalt (#1E488F). oklch(39.5% 0.12 270), rgb(46, 63, 134).
Aa
White text reads best on this color (9.67:1).
About this color
#2E3F86 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.120 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 9.67:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.17:1 |
| White text | 9.67:1 |
Values
| HEX | #2E3F86 |
| RGB | rgb(46, 63, 134) |
| HSL | hsl(228, 49%, 35%) |
| OKLCH | oklch(39.5% 0.12 270) |
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 #2E3F86 | 9.67:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #2E3F86 | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #2E3F86 text on white | 9.67:1 | AAA | Lc 92.1 | Preferred for body text |
| #2E3F86 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#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
#AABEFC
oklch(80.9% 0.091 270.5)
-
Step 400
400
#7E9AFA
oklch(70.7% 0.144 270.1)
-
Step 500
500
#5F7EF7
oklch(63.1% 0.183 269.7)
-
Step 600
600
#4863E6
oklch(55.6% 0.2 269.8)
-
Step 700
700
#3B51C8
oklch(49.1% 0.186 270.1)
-
Step 800
800
#3043A2
oklch(42.7% 0.155 270)
-
Step 900
900 (this color)
#2E3F86
oklch(39.5% 0.12 270)
-
Step 950
950
#18234B
oklch(27.1% 0.075 269.3)
#2E3F86 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) | #154989 | 0.032 |
| Deuteranopia (no green cones) | #004185 | 0.035 |
| Tritanopia (no blue cones) | #00505C | 0.102 |
| Achromatopsia (no color) | #444444 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E3F86
#2E3F86
oklch(39.5% 0.12 270)
- #574400
#574400
oklch(39.6% 0.081 90.6)
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 #2E3F86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Twilight Blue #0A437A ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.040
- Blueberry #464196 ΔE 0.045
- Light Navy #155084 ΔE 0.051
- Dusk Blue #26538D ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.065
- Sapphire #2138AB ΔE 0.065
Use #2E3F86 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.