#174785
Closest named color: Cobalt (#1E488F). oklch(40.2% 0.116 256.6), rgb(23, 71, 133).
Aa
White text reads best on this color (9.22:1).
About this color
#174785 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.116 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.018 away. White text reads best on it, at 9.22:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #174785 |
| RGB | rgb(23, 71, 133) |
| HSL | hsl(214, 71%, 31%) |
| OKLCH | oklch(40.2% 0.116 256.6) |
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 #174785 | 9.22:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #174785 | 2.27:1 | Fails | Lc 13.1 | Not readable |
| #174785 text on white | 9.22:1 | AAA | Lc 90.9 | Preferred for body text |
| #174785 text on black | 2.27:1 | Fails | Lc -11.5 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9CC3F9
oklch(80.9% 0.088 256.6)
-
Step 400
400
#65A2F6
oklch(70.7% 0.139 256.7)
-
Step 500
500
#3688F2
oklch(63.2% 0.178 256.5)
-
Step 600
600
#026EE1
oklch(55.5% 0.194 256.8)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9E
oklch(42.6% 0.15 256.7)
-
Step 900
900 (this color)
#174785
oklch(40.2% 0.116 256.6)
-
Step 950
950
#0B2649
oklch(27% 0.073 256.3)
#174785 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) | #264D87 | 0.023 |
| Deuteranopia (no green cones) | #0D4384 | 0.014 |
| Tritanopia (no blue cones) | #00565F | 0.089 |
| Achromatopsia (no color) | #474747 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174785
#174785
oklch(40.2% 0.116 256.6)
- #614100
#614100
oklch(40.2% 0.084 77.1)
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 #174785, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.018
- Twilight Blue #0A437A ΔE 0.023
- Light Navy #155084 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.040
- Dusk Blue #26538D ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.063
- Blueberry #464196 ΔE 0.063
Use #174785 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.