#284866
Closest named color: Dark Grey Blue (#29465B). oklch(39.1% 0.064 248.3), rgb(40, 72, 102).
Aa
White text reads best on this color (9.50:1).
About this color
#284866 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.064 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.019 away. White text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #284866 |
| RGB | rgb(40, 72, 102) |
| HSL | hsl(209, 44%, 28%) |
| OKLCH | oklch(39.1% 0.064 248.3) |
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 #284866 | 9.50:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #284866 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #284866 text on white | 9.50:1 | AAA | Lc 91.9 | Preferred for body text |
| #284866 text on black | 2.20:1 | Fails | Lc -10.5 | 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 900.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DF
oklch(80.9% 0.048 248.4)
-
Step 400
400
#7BA5CF
oklch(70.7% 0.077 249)
-
Step 500
500
#578EC2
oklch(63% 0.098 248.3)
-
Step 600
600
#3B78AE
oklch(55.7% 0.105 247.7)
-
Step 700
700
#2D6496
oklch(49% 0.099 248.6)
-
Step 800
800
#26527A
oklch(42.7% 0.083 248.4)
-
Step 900
900 (this color)
#284866
oklch(39.1% 0.064 248.3)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#284866 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) | #3B4967 | 0.025 |
| Deuteranopia (no green cones) | #334365 | 0.019 |
| Tritanopia (no blue cones) | #004F52 | 0.054 |
| Achromatopsia (no color) | #464646 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284866
#284866
oklch(39.1% 0.064 248.3)
- #5C3E1C
#5C3E1C
oklch(39.1% 0.064 67.3)
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 #284866, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.019
- Charcoal #264653 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.046
- Light Navy #155084 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
- Deep Teal #00555A ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.056
Use #284866 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.