#174E64
Closest named color: Dark Grey Blue (#29465B). oklch(39.9% 0.067 228.9), rgb(23, 78, 100).
Aa
White text reads best on this color (9.09:1).
About this color
#174E64 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.067 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 9.09:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.31:1 |
| White text | 9.09:1 |
Values
| HEX | #174E64 |
| RGB | rgb(23, 78, 100) |
| HSL | hsl(197, 63%, 24%) |
| OKLCH | oklch(39.9% 0.067 228.9) |
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 #174E64 | 9.09:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #174E64 | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #174E64 text on white | 9.09:1 | AAA | Lc 90.6 | Preferred for body text |
| #174E64 text on black | 2.31:1 | Fails | Lc -11.7 | 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
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE8
oklch(88.5% 0.028 229.2)
-
Step 300
300
#A0C8DB
oklch(81% 0.05 228.5)
-
Step 400
400
#69ABC9
oklch(70.8% 0.08 228.8)
-
Step 500
500
#3895BB
oklch(63.1% 0.103 228.9)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900 (this color)
#174E64
oklch(39.9% 0.067 228.9)
-
Step 950
950
#0C2A37
oklch(26.9% 0.043 229.9)
#174E64 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) | #434D65 | 0.048 |
| Deuteranopia (no green cones) | #384564 | 0.041 |
| Tritanopia (no blue cones) | #005455 | 0.039 |
| Achromatopsia (no color) | #484848 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174E64
#174E64
oklch(39.9% 0.067 228.9)
- #643C26
#643C26
oklch(39.9% 0.066 48.9)
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 #174E64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal #264653 ΔE 0.033
- Deep Teal #00555A ΔE 0.034
- Dark Teal #014D4E ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.050
- Petrol #005F6A ΔE 0.053
- Light Navy #155084 ΔE 0.054
Use #174E64 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.