#174A5B
Closest named color: Charcoal (#264653). oklch(38.4% 0.06 224), rgb(23, 74, 91).
Aa
White text reads best on this color (9.69:1).
About this color
#174A5B is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.060 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.018 away. White text reads best on it, at 9.69:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.16:1 |
| White text | 9.69:1 |
Values
| HEX | #174A5B |
| RGB | rgb(23, 74, 91) |
| HSL | hsl(195, 60%, 22%) |
| OKLCH | oklch(38.4% 0.06 224) |
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 #174A5B | 9.69:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #174A5B | 2.16:1 | Fails | Lc 11.7 | Not readable |
| #174A5B text on white | 9.69:1 | AAA | Lc 92.2 | Preferred for body text |
| #174A5B text on black | 2.16:1 | Fails | Lc -10.2 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A2C8D6
oklch(81% 0.045 222.3)
-
Step 400
400
#6DABC2
oklch(70.8% 0.072 223.6)
-
Step 500
500
#4095B3
oklch(63% 0.093 224.5)
-
Step 600
600
#137F9F
oklch(55.6% 0.101 224.6)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#09586E
oklch(42.8% 0.077 223.3)
-
Step 900
900 (this color)
#174A5B
oklch(38.4% 0.06 224)
-
Step 950
950
#0E2A34
oklch(26.9% 0.038 224.5)
#174A5B 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) | #40485C | 0.046 |
| Deuteranopia (no green cones) | #37415B | 0.042 |
| Tritanopia (no blue cones) | #004F4F | 0.033 |
| Achromatopsia (no color) | #444444 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174A5B
#174A5B
oklch(38.4% 0.06 224)
- #5E3828
#5E3828
oklch(38.3% 0.06 43.4)
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 #174A5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.018
- Dark Grey Blue #29465B ΔE 0.019
- Dark Teal #014D4E ΔE 0.030
- Deep Teal #00555A ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Blue Green #005249 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
- Midnight Green #073B4C ΔE 0.054
Use #174A5B 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.