#174959
Closest named color: Charcoal (#264653). oklch(38% 0.059 223), rgb(23, 73, 89).
Aa
White text reads best on this color (9.84:1).
About this color
#174959 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.059 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.016 away. White text reads best on it, at 9.84:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.13:1 |
| White text | 9.84:1 |
Values
| HEX | #174959 |
| RGB | rgb(23, 73, 89) |
| HSL | hsl(195, 59%, 22%) |
| OKLCH | oklch(38% 0.059 223) |
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 #174959 | 9.84:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #174959 | 2.13:1 | Fails | Lc 11.3 | Not readable |
| #174959 text on white | 9.84:1 | AAA | Lc 92.6 | Preferred for body text |
| #174959 text on black | 2.13:1 | Fails | Lc -9.8 | 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
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A3C7D6
oklch(80.8% 0.044 225.1)
-
Step 400
400
#6EABC1
oklch(70.8% 0.071 222.8)
-
Step 500
500
#4295B1
oklch(63% 0.09 223.3)
-
Step 600
600
#177F9D
oklch(55.5% 0.098 223.3)
-
Step 700
700
#026B86
oklch(49% 0.091 223.3)
-
Step 800
800
#0C586D
oklch(42.8% 0.075 222.5)
-
Step 900
900 (this color)
#174959
oklch(38% 0.059 223)
-
Step 950
950
#0F2A34
oklch(26.9% 0.038 225.1)
#174959 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) | #40475A | 0.047 |
| Deuteranopia (no green cones) | #374059 | 0.043 |
| Tritanopia (no blue cones) | #004E4E | 0.031 |
| Achromatopsia (no color) | #434343 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174959
#174959
oklch(38% 0.059 223)
- #5D3828
#5D3828
oklch(38.1% 0.059 44)
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 #174959, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.016
- Dark Grey Blue #29465B ΔE 0.019
- Dark Teal #014D4E ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.038
- Deep Teal #00555A ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.045
- Dark Blue Green #005249 ΔE 0.048
- Midnight Green #073B4C ΔE 0.051
Use #174959 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.