#174B5E
Closest named color: Dark Grey Blue (#29465B). oklch(38.8% 0.062 226.3), rgb(23, 75, 94).
Aa
White text reads best on this color (9.52:1).
About this color
#174B5E is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.062 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.020 away. White text reads best on it, at 9.52:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.52:1 |
Values
| HEX | #174B5E |
| RGB | rgb(23, 75, 94) |
| HSL | hsl(196, 61%, 23%) |
| OKLCH | oklch(38.8% 0.062 226.3) |
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 #174B5E | 9.52:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #174B5E | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #174B5E text on white | 9.52:1 | AAA | Lc 91.8 | Preferred for body text |
| #174B5E text on black | 2.20:1 | Fails | Lc -10.6 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A1C7D8
oklch(80.8% 0.047 226.9)
-
Step 400
400
#6CABC5
oklch(70.8% 0.075 226.2)
-
Step 500
500
#3E95B6
oklch(63.1% 0.096 226.5)
-
Step 600
600
#0C7FA2
oklch(55.6% 0.104 226.3)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#055770
oklch(42.6% 0.08 226.2)
-
Step 900
900 (this color)
#174B5E
oklch(38.8% 0.062 226.3)
-
Step 950
950
#0E2A35
oklch(26.9% 0.039 226.8)
#174B5E 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) | #41495F | 0.047 |
| Deuteranopia (no green cones) | #37425E | 0.042 |
| Tritanopia (no blue cones) | #005151 | 0.036 |
| Achromatopsia (no color) | #454545 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174B5E
#174B5E
oklch(38.8% 0.062 226.3)
- #603927
#603927
oklch(38.7% 0.063 45.2)
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 #174B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.020
- Charcoal #264653 ΔE 0.022
- Dark Teal #014D4E ΔE 0.034
- Deep Teal #00555A ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.039
- Dark Blue Green #005249 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.058
Use #174B5E 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.