#284E6E
Closest named color: Dark Grey Blue (#29465B). oklch(41.1% 0.069 246), rgb(40, 78, 110).
Aa
White text reads best on this color (8.73:1).
About this color
#284E6E is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.069 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.036 away. White text reads best on it, at 8.73:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #284E6E |
| RGB | rgb(40, 78, 110) |
| HSL | hsl(207, 47%, 29%) |
| OKLCH | oklch(41.1% 0.069 246) |
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 #284E6E | 8.73:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #284E6E | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #284E6E text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #284E6E text on black | 2.40:1 | Fails | Lc -12.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#7FA5C7
oklch(70.6% 0.065 245.9)
-
Step 500
500
#5E8FB9
oklch(63.2% 0.083 245.5)
-
Step 600
600
#4378A5
oklch(55.6% 0.09 246)
-
Step 700
700
#35658D
oklch(49.1% 0.083 245.7)
-
Step 800
800 (this color)
#284E6E
oklch(41.1% 0.069 246)
-
Step 900
900
#28445D
oklch(37.6% 0.055 246.8)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#284E6E 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) | #404F6F | 0.030 |
| Deuteranopia (no green cones) | #37486D | 0.023 |
| Tritanopia (no blue cones) | #005659 | 0.056 |
| Achromatopsia (no color) | #4B4B4B | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284E6E
#284E6E
oklch(41.1% 0.069 246)
- #64421E
#64421E
oklch(41% 0.069 65.2)
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 #284E6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.037
- Light Navy #155084 ΔE 0.037
- Charcoal #264653 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.050
- YInMn Blue #415A77 ΔE 0.051
- Dusk Blue #26538D ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.052
Use #284E6E 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.