#285188
Closest named color: Dusk Blue (#26538D). oklch(43.4% 0.102 256.5), rgb(40, 81, 136).
Aa
White text reads best on this color (8.00:1).
About this color
#285188 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.102 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.009 away. White text reads best on it, at 8.00:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #285188 |
| RGB | rgb(40, 81, 136) |
| HSL | hsl(214, 55%, 35%) |
| OKLCH | oklch(43.4% 0.102 256.5) |
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 #285188 | 8.00:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #285188 | 2.62:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #285188 text on white | 8.00:1 | AAA | Lc 87.5 | Fine for body text |
| #285188 text on black | 2.62:1 | Fails | Lc -14.6 | 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
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A8C3E8
oklch(81% 0.06 256.3)
-
Step 400
400
#79A3DC
oklch(70.7% 0.096 256.2)
-
Step 500
500
#568BD2
oklch(63.1% 0.122 256.2)
-
Step 600
600
#3B73BF
oklch(55.5% 0.133 256.7)
-
Step 700
700
#2D60A5
oklch(49% 0.124 256.8)
-
Step 800
800 (this color)
#285188
oklch(43.4% 0.102 256.5)
-
Step 900
900
#24426B
oklch(37.7% 0.079 256.6)
-
Step 950
950
#15273F
oklch(27% 0.051 256.1)
#285188 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) | #38558A | 0.022 |
| Deuteranopia (no green cones) | #294C87 | 0.014 |
| Tritanopia (no blue cones) | #005E66 | 0.081 |
| Achromatopsia (no color) | #505050 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285188
#285188
oklch(43.4% 0.102 256.5)
- #6D4900
#6D4900
oklch(43.5% 0.091 76.5)
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 #285188, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.009
- Light Navy #155084 ΔE 0.017
- Deep Sea Blue #015482 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.029
- Cobalt #1E488F ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.040
- Twilight #4E518B ΔE 0.048
- Dusk #4E5481 ΔE 0.050
Use #285188 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.