#174456
Closest named color: Charcoal (#264653). oklch(36.4% 0.057 228), rgb(23, 68, 86).
Aa
White text reads best on this color (10.51:1).
About this color
#174456 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.057 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.017 away. White text reads best on it, at 10.51:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #174456 |
| RGB | rgb(23, 68, 86) |
| HSL | hsl(197, 58%, 21%) |
| OKLCH | oklch(36.4% 0.057 228) |
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 #174456 | 10.51:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #174456 | 1.99:1 | Fails | Lc 9.7 | Not readable |
| #174456 text on white | 10.51:1 | AAA | Lc 94.2 | Preferred for body text |
| #174456 text on black | 1.99:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE6
oklch(88.6% 0.024 227.8)
-
Step 300
300
#A5C7D7
oklch(81% 0.043 228)
-
Step 400
400
#72A9C3
oklch(70.6% 0.069 229.2)
-
Step 500
500
#4994B3
oklch(63.1% 0.088 227.6)
-
Step 600
600
#257E9F
oklch(55.7% 0.095 227.6)
-
Step 700
700
#156A88
oklch(49.1% 0.089 227.7)
-
Step 800
800
#16566F
oklch(42.6% 0.074 229)
-
Step 900
900 (this color)
#174456
oklch(36.4% 0.057 228)
-
Step 950
950
#112A34
oklch(27% 0.036 226.6)
#174456 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) | #3B4357 | 0.042 |
| Deuteranopia (no green cones) | #323C56 | 0.037 |
| Tritanopia (no blue cones) | #00494A | 0.033 |
| Achromatopsia (no color) | #3F3F3F | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174456
#174456
oklch(36.4% 0.057 228)
- #573523
#573523
oklch(36.6% 0.057 48.2)
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 #174456, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.017
- Dark Grey Blue #29465B ΔE 0.022
- Dark Blue Grey #1F3B4D ΔE 0.029
- Midnight Green #073B4C ΔE 0.035
- Dark Teal #014D4E ΔE 0.038
- Onyx #343A40 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.050
Use #174456 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.