#174457
Closest named color: Charcoal (#264653). oklch(36.5% 0.058 229.4), rgb(23, 68, 87).
Aa
White text reads best on this color (10.49:1).
About this color
#174457 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.058 and its hue 229°. 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 10.49:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #174457 |
| RGB | rgb(23, 68, 87) |
| HSL | hsl(198, 58%, 22%) |
| OKLCH | oklch(36.5% 0.058 229.4) |
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 #174457 | 10.49:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #174457 | 2.00:1 | Fails | Lc 9.8 | Not readable |
| #174457 text on white | 10.49:1 | AAA | Lc 94.1 | Preferred for body text |
| #174457 text on black | 2.00:1 | Fails | Lc -8.4 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADDE6
oklch(88.6% 0.024 227.8)
-
Step 300
300
#A4C7D8
oklch(81% 0.044 228.9)
-
Step 400
400
#72A9C4
oklch(70.7% 0.07 230.2)
-
Step 500
500
#4994B5
oklch(63.2% 0.089 229.2)
-
Step 600
600
#257DA1
oklch(55.5% 0.097 230.1)
-
Step 700
700
#156A8A
oklch(49.2% 0.091 229.4)
-
Step 800
800
#165670
oklch(42.6% 0.075 230)
-
Step 900
900 (this color)
#174457
oklch(36.5% 0.058 229.4)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#174457 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) | #3A4358 | 0.041 |
| Deuteranopia (no green cones) | #313C57 | 0.036 |
| Tritanopia (no blue cones) | #00494A | 0.035 |
| Achromatopsia (no color) | #3F3F3F | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174457
#174457
oklch(36.5% 0.058 229.4)
- #573521
#573521
oklch(36.5% 0.058 50.6)
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 #174457, 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 0.021
- Dark Blue Grey #1F3B4D ΔE 0.030
- Midnight Green #073B4C ΔE 0.036
- Dark Teal #014D4E ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.049
- Onyx #343A40 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
Use #174457 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.