#1C5670
Closest named color: Deep Sea Blue (#015482). oklch(42.8% 0.073 231.5), rgb(28, 86, 112).
Aa
White text reads best on this color (8.03:1).
About this color
#1C5670 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.073 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.034 away. White text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #1C5670 |
| RGB | rgb(28, 86, 112) |
| HSL | hsl(199, 60%, 27%) |
| OKLCH | oklch(42.8% 0.073 231.5) |
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 #1C5670 | 8.03:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #1C5670 | 2.61:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #1C5670 text on white | 8.03:1 | AAA | Lc 87.6 | Fine for body text |
| #1C5670 text on black | 2.61:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A6C6D8
oklch(80.9% 0.043 232.7)
-
Step 400
400
#74A9C4
oklch(70.8% 0.068 231.1)
-
Step 500
500
#4D93B5
oklch(63.1% 0.087 231.5)
-
Step 600
600
#2C7DA1
oklch(55.7% 0.095 231.4)
-
Step 700
700
#1E698A
oklch(49.1% 0.088 232)
-
Step 800
800 (this color)
#1C5670
oklch(42.8% 0.073 231.5)
-
Step 900
900
#1E475A
oklch(37.7% 0.056 230.9)
-
Step 950
950
#132A35
oklch(27.2% 0.035 230.7)
#1C5670 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) | #495571 | 0.049 |
| Deuteranopia (no green cones) | #3E4D70 | 0.042 |
| Tritanopia (no blue cones) | #005D5F | 0.043 |
| Achromatopsia (no color) | #505050 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C5670
#1C5670
oklch(42.8% 0.073 231.5)
- #6F4328
#6F4328
oklch(42.9% 0.073 51.3)
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 #1C5670, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.034
- Petrol #005F6A ΔE 0.034
- Deep Teal #00555A ΔE 0.041
- Light Navy #155084 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.045
- Dusk Blue #26538D ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.053
Use #1C5670 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.