#174487
Closest named color: Cobalt (#1E488F). oklch(39.6% 0.123 258.7), rgb(23, 68, 135).
Aa
White text reads best on this color (9.48:1).
About this color
#174487 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.123 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 9.48:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #174487 |
| RGB | rgb(23, 68, 135) |
| HSL | hsl(216, 71%, 31%) |
| OKLCH | oklch(39.6% 0.123 258.7) |
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 #174487 | 9.48:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #174487 | 2.21:1 | Fails | Lc 12.4 | Not readable |
| #174487 text on white | 9.48:1 | AAA | Lc 91.5 | Preferred for body text |
| #174487 text on black | 2.21:1 | Fails | Lc -10.9 | 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
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9DC2FC
oklch(80.8% 0.092 259.2)
-
Step 400
400
#65A0FB
oklch(70.6% 0.148 258.8)
-
Step 500
500
#3985F8
oklch(63% 0.188 258.8)
-
Step 600
600
#0E6BE7
oklch(55.5% 0.204 258.8)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0649A3
oklch(42.7% 0.158 258.8)
-
Step 900
900 (this color)
#174487
oklch(39.6% 0.123 258.7)
-
Step 950
950
#0C254B
oklch(26.9% 0.077 258.8)
#174487 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) | #1D4B89 | 0.022 |
| Deuteranopia (no green cones) | #004186 | 0.016 |
| Tritanopia (no blue cones) | #00545F | 0.093 |
| Achromatopsia (no color) | #464646 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174487
#174487
oklch(39.6% 0.123 258.7)
- #5E4000
#5E4000
oklch(39.5% 0.082 78.6)
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 #174487, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Twilight Blue #0A437A ΔE 0.024
- Light Navy #155084 ΔE 0.036
- Dusk Blue #26538D ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.061
- Blueberry #464196 ΔE 0.062
- Marine Blue #01386A ΔE 0.062
Use #174487 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.