#174F63
Closest named color: Dark Grey Blue (#29465B). oklch(40.1% 0.066 226.1), rgb(23, 79, 99).
Aa
White text reads best on this color (8.99:1).
About this color
#174F63 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.030 away. White text reads best on it, at 8.99:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #174F63 |
| RGB | rgb(23, 79, 99) |
| HSL | hsl(196, 62%, 24%) |
| OKLCH | oklch(40.1% 0.066 226.1) |
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 #174F63 | 8.99:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #174F63 | 2.33:1 | Fails | Lc 13.6 | Not readable |
| #174F63 text on white | 8.99:1 | AAA | Lc 90.4 | Preferred for body text |
| #174F63 text on black | 2.33:1 | Fails | Lc -11.9 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C7DDE7
oklch(88.4% 0.027 226.8)
-
Step 300
300
#A0C8D9
oklch(81% 0.049 225.7)
-
Step 400
400
#68ABC6
oklch(70.7% 0.079 225.8)
-
Step 500
500
#3796B8
oklch(63.2% 0.101 225.7)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900 (this color)
#174F63
oklch(40.1% 0.066 226.1)
-
Step 950
950
#0C2A36
oklch(26.9% 0.042 227.8)
#174F63 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) | #444D64 | 0.049 |
| Deuteranopia (no green cones) | #3A4663 | 0.043 |
| Tritanopia (no blue cones) | #005556 | 0.036 |
| Achromatopsia (no color) | #494949 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174F63
#174F63
oklch(40.1% 0.066 226.1)
- #653C29
#653C29
oklch(40.1% 0.065 45.3)
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 #174F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.030
- Deep Teal #00555A ΔE 0.030
- Charcoal #264653 ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Teal #014D4E ΔE 0.039
- Petrol #005F6A ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.051
- Dark Blue Green #005249 ΔE 0.051
Use #174F63 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.