#285798
Closest named color: Dusk Blue (#26538D). oklch(45.9% 0.118 257.2), rgb(40, 87, 152).
Aa
White text reads best on this color (7.22:1).
About this color
#285798 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.118 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.020 away. White text reads best on it, at 7.22:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #285798 |
| RGB | rgb(40, 87, 152) |
| HSL | hsl(215, 58%, 38%) |
| OKLCH | oklch(45.9% 0.118 257.2) |
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 #285798 | 7.22:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #285798 | 2.90:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #285798 text on white | 7.22:1 | AAA | Lc 84.8 | Fine for body text |
| #285798 text on black | 2.90:1 | Fails | Lc -17.2 | Dividers and decoration only |
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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF3
oklch(88.6% 0.038 257)
-
Step 300
300
#A5C3ED
oklch(81% 0.068 256.8)
-
Step 400
400
#74A2E5
oklch(70.7% 0.111 257.7)
-
Step 500
500
#4E8ADD
oklch(63.2% 0.14 256.9)
-
Step 600
600
#3172CB
oklch(55.7% 0.153 257.2)
-
Step 700
700
#235FAF
oklch(49.1% 0.142 257)
-
Step 800
800 (this color)
#285798
oklch(45.9% 0.118 257.2)
-
Step 900
900
#1F4171
oklch(37.6% 0.092 257.4)
-
Step 950
950
#132742
oklch(27.1% 0.057 256.4)
#285798 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) | #385D9B | 0.025 |
| Deuteranopia (no green cones) | #255297 | 0.015 |
| Tritanopia (no blue cones) | #006670 | 0.092 |
| Achromatopsia (no color) | #575757 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285798
#285798
oklch(45.9% 0.118 257.2)
- #754F00
#754F00
oklch(45.8% 0.096 76.9)
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 #285798, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.030
- Light Navy #155084 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.045
- Cobalt #1E488F ΔE 0.046
- Twilight #4E518B ΔE 0.048
Use #285798 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.