#2F3E62
Closest named color: Dark Grey Blue (#29465B). oklch(36.8% 0.065 266.1), rgb(47, 62, 98).
Aa
White text reads best on this color (10.57:1).
About this color
#2F3E62 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.065 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 10.57:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.57:1 |
Values
| HEX | #2F3E62 |
| RGB | rgb(47, 62, 98) |
| HSL | hsl(222, 35%, 28%) |
| OKLCH | oklch(36.8% 0.065 266.1) |
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 #2F3E62 | 10.57:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #2F3E62 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #2F3E62 text on white | 10.57:1 | AAA | Lc 94.4 | Preferred for body text |
| #2F3E62 text on black | 1.98:1 | Fails | Lc -8.1 | 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 900.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D1D9EC
oklch(88.5% 0.028 267.5)
-
Step 300
300
#B2C1E1
oklch(81% 0.048 265.4)
-
Step 400
400
#8AA0D2
oklch(70.7% 0.078 266)
-
Step 500
500
#6D88C7
oklch(63.2% 0.1 265.9)
-
Step 600
600
#5570B3
oklch(55.5% 0.109 266.3)
-
Step 700
700
#455E9A
oklch(49.1% 0.101 265.7)
-
Step 800
800
#394D7D
oklch(42.7% 0.084 265.8)
-
Step 900
900 (this color)
#2F3E62
oklch(36.8% 0.065 266.1)
-
Step 950
950
#1D263B
oklch(27.1% 0.041 266)
#2F3E62 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) | #304163 | 0.010 |
| Deuteranopia (no green cones) | #2B3D61 | 0.007 |
| Tritanopia (no blue cones) | #1A464B | 0.059 |
| Achromatopsia (no color) | #3F3F3F | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3E62
#2F3E62
oklch(36.8% 0.065 266.1)
- #4F3C0F
#4F3C0F
oklch(36.8% 0.066 84.9)
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 #2F3E62, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.042
- Charcoal #264653 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.044
- Twilight Blue #0A437A ΔE 0.049
- Marine Blue #01386A ΔE 0.050
- Onyx #343A40 ΔE 0.058
- Midnight Green #073B4C ΔE 0.058
Use #2F3E62 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.