#284984
Closest named color: Cobalt (#1E488F). oklch(41.3% 0.106 261.1), rgb(40, 73, 132).
Aa
White text reads best on this color (8.83:1).
About this color
#284984 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.106 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 8.83:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #284984 |
| RGB | rgb(40, 73, 132) |
| HSL | hsl(218, 53%, 34%) |
| OKLCH | oklch(41.3% 0.106 261.1) |
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 #284984 | 8.83:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #284984 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #284984 text on white | 8.83:1 | AAA | Lc 90.0 | Fine for body text |
| #284984 text on black | 2.37:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#AAC2E9
oklch(80.9% 0.061 260.1)
-
Step 400
400
#7DA1DF
oklch(70.7% 0.1 261)
-
Step 500
500
#5C88D6
oklch(63% 0.128 261.2)
-
Step 600
600
#4371C3
oklch(55.7% 0.137 261.1)
-
Step 700
700
#345EA9
oklch(49.1% 0.129 261)
-
Step 800
800 (this color)
#284984
oklch(41.3% 0.106 261.1)
-
Step 900
900
#27416D
oklch(37.8% 0.082 260.3)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#284984 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) | #2D4F86 | 0.019 |
| Deuteranopia (no green cones) | #1D4683 | 0.015 |
| Tritanopia (no blue cones) | #005760 | 0.087 |
| Achromatopsia (no color) | #4A4A4A | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284984
#284984
oklch(41.3% 0.106 261.1)
- #624500
#624500
oklch(41.2% 0.085 81.2)
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 #284984, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Light Navy #155084 ΔE 0.023
- Dusk Blue #26538D ΔE 0.030
- Twilight Blue #0A437A ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.053
- Blueberry #464196 ΔE 0.054
Use #284984 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.