#1C4286
Closest named color: Cobalt (#1E488F). oklch(39.3% 0.122 261), rgb(28, 66, 134).
Aa
White text reads best on this color (9.66:1).
About this color
#1C4286 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.122 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.022 away. White text reads best on it, at 9.66:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.17:1 |
| White text | 9.66:1 |
Values
| HEX | #1C4286 |
| RGB | rgb(28, 66, 134) |
| HSL | hsl(218, 65%, 32%) |
| OKLCH | oklch(39.3% 0.122 261) |
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 #1C4286 | 9.66:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #1C4286 | 2.17:1 | Fails | Lc 12.0 | Not readable |
| #1C4286 text on white | 9.66:1 | AAA | Lc 92.0 | Preferred for body text |
| #1C4286 text on black | 2.17:1 | Fails | Lc -10.4 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9FC2FC
oklch(81% 0.091 260.4)
-
Step 400
400
#6B9FFB
oklch(70.7% 0.146 261.1)
-
Step 500
500
#4284F9
oklch(63.2% 0.188 260.9)
-
Step 600
600
#226AE8
oklch(55.7% 0.204 260.9)
-
Step 700
700
#1557C9
oklch(49% 0.189 260.9)
-
Step 800
800
#1548A3
oklch(42.7% 0.157 261.1)
-
Step 900
900 (this color)
#1C4286
oklch(39.3% 0.122 261)
-
Step 950
950
#0F254C
oklch(27.1% 0.078 260.9)
#1C4286 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) | #1A4A88 | 0.023 |
| Deuteranopia (no green cones) | #004085 | 0.018 |
| Tritanopia (no blue cones) | #00525D | 0.095 |
| Achromatopsia (no color) | #444444 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C4286
#1C4286
oklch(39.3% 0.122 261)
- #5C4000
#5C4000
oklch(39.3% 0.081 80.5)
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 #1C4286, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.022
- Twilight Blue #0A437A ΔE 0.024
- Light Navy #155084 ΔE 0.041
- Dusk Blue #26538D ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.058
- Marine Blue #01386A ΔE 0.059
- Blueberry #464196 ΔE 0.060
Use #1C4286 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.