#1C50A5
Closest named color: Cobalt (#1E488F). oklch(44.8% 0.148 260), rgb(28, 80, 165).
Aa
White text reads best on this color (7.66:1).
About this color
#1C50A5 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.148 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.040 away. White text reads best on it, at 7.66:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.74:1 |
| White text | 7.66:1 |
Values
| HEX | #1C50A5 |
| RGB | rgb(28, 80, 165) |
| HSL | hsl(217, 71%, 38%) |
| OKLCH | oklch(44.8% 0.148 260) |
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 #1C50A5 | 7.66:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #1C50A5 | 2.74:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #1C50A5 text on white | 7.66:1 | AAA | Lc 86.1 | Fine for body text |
| #1C50A5 text on black | 2.74:1 | Fails | Lc -15.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#A0C2F9
oklch(80.9% 0.087 259.9)
-
Step 400
400
#6CA0F6
oklch(70.7% 0.138 260)
-
Step 500
500
#4485F2
oklch(63% 0.177 260.1)
-
Step 600
600
#246CE1
oklch(55.6% 0.192 260)
-
Step 700
700
#1659C4
oklch(49.1% 0.18 260.1)
-
Step 800
800 (this color)
#1C50A5
oklch(44.8% 0.148 260)
-
Step 900
900
#193F7E
oklch(37.8% 0.115 260)
-
Step 950
950
#0F254A
oklch(27% 0.074 260.2)
#1C50A5 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) | #185AA8 | 0.027 |
| Deuteranopia (no green cones) | #004DA3 | 0.017 |
| Tritanopia (no blue cones) | #006573 | 0.114 |
| Achromatopsia (no color) | #535353 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C50A5
#1C50A5
oklch(44.8% 0.148 260)
- #6F4E00
#6F4E00
oklch(44.8% 0.093 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 #1C50A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.040
- Dusk Blue #26538D ΔE 0.042
- Light Navy #155084 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.057
- Blueberry #464196 ΔE 0.058
- Sapphire #2138AB ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.062
Use #1C50A5 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.