#284766
Closest named color: Dark Grey Blue (#29465B). oklch(38.9% 0.065 249.8), rgb(40, 71, 102).
Aa
White text reads best on this color (9.61:1).
About this color
#284766 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.065 and its hue 250°. 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 9.61:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #284766 |
| RGB | rgb(40, 71, 102) |
| HSL | hsl(210, 44%, 28%) |
| OKLCH | oklch(38.9% 0.065 249.8) |
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 #284766 | 9.61:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #284766 | 2.18:1 | Fails | Lc 11.8 | Not readable |
| #284766 text on white | 9.61:1 | AAA | Lc 92.1 | Preferred for body text |
| #284766 text on black | 2.18:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4DF
oklch(80.9% 0.048 248.4)
-
Step 400
400
#7BA5D0
oklch(70.8% 0.078 249.6)
-
Step 500
500
#588EC3
oklch(63.1% 0.099 249.2)
-
Step 600
600
#3D77B0
oklch(55.6% 0.108 250)
-
Step 700
700
#2E6497
oklch(49.1% 0.1 249.4)
-
Step 800
800
#28527B
oklch(42.9% 0.083 249.9)
-
Step 900
900 (this color)
#284766
oklch(38.9% 0.065 249.8)
-
Step 950
950
#16283A
oklch(27.1% 0.041 249.6)
#284766 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) | #3A4867 | 0.024 |
| Deuteranopia (no green cones) | #324265 | 0.018 |
| Tritanopia (no blue cones) | #004E52 | 0.054 |
| Achromatopsia (no color) | #454545 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284766
#284766
oklch(38.9% 0.065 249.8)
- #5B3E1A
#5B3E1A
oklch(38.9% 0.065 69.6)
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 #284766, 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 0.045
- Light Navy #155084 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.055
- Deep Teal #00555A ΔE 0.059
Use #284766 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.