#174C63
Closest named color: Dark Grey Blue (#29465B). oklch(39.3% 0.067 230.8), rgb(23, 76, 99).
Aa
White text reads best on this color (9.33:1).
About this color
#174C63 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.067 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 9.33:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.25:1 |
| White text | 9.33:1 |
Values
| HEX | #174C63 |
| RGB | rgb(23, 76, 99) |
| HSL | hsl(198, 62%, 24%) |
| OKLCH | oklch(39.3% 0.067 230.8) |
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 #174C63 | 9.33:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #174C63 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #174C63 text on white | 9.33:1 | AAA | Lc 91.3 | Preferred for body text |
| #174C63 text on black | 2.25:1 | Fails | Lc -11.1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A0C7DB
oklch(80.8% 0.05 230.4)
-
Step 400
400
#6AAACA
oklch(70.7% 0.081 231.2)
-
Step 500
500
#3B94BC
oklch(63% 0.103 231.1)
-
Step 600
600
#037EA8
oklch(55.6% 0.111 230.7)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#015775
oklch(42.8% 0.085 230.4)
-
Step 900
900 (this color)
#174C63
oklch(39.3% 0.067 230.8)
-
Step 950
950
#0D2A37
oklch(27% 0.042 230.5)
#174C63 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) | #404B64 | 0.045 |
| Deuteranopia (no green cones) | #364363 | 0.040 |
| Tritanopia (no blue cones) | #005254 | 0.039 |
| Achromatopsia (no color) | #474747 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174C63
#174C63
oklch(39.3% 0.067 230.8)
- #623B23
#623B23
oklch(39.4% 0.066 51.4)
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 #174C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.029
- Deep Teal #00555A ΔE 0.038
- Dark Teal #014D4E ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.054
- Light Navy #155084 ΔE 0.055
Use #174C63 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.