#174957
Closest named color: Charcoal (#264653). oklch(37.9% 0.057 219.9), rgb(23, 73, 87).
Aa
White text reads best on this color (9.87:1).
About this color
#174957 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.057 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.015 away. White text reads best on it, at 9.87:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #174957 |
| RGB | rgb(23, 73, 87) |
| HSL | hsl(193, 58%, 22%) |
| OKLCH | oklch(37.9% 0.057 219.9) |
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 #174957 | 9.87:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #174957 | 2.12:1 | Fails | Lc 11.3 | Not readable |
| #174957 text on white | 9.87:1 | AAA | Lc 92.7 | Preferred for body text |
| #174957 text on black | 2.12:1 | 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
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A3C8D4
oklch(81% 0.043 219.5)
-
Step 400
400
#6EABBE
oklch(70.7% 0.069 219.6)
-
Step 500
500
#4296AE
oklch(63.1% 0.088 219.6)
-
Step 600
600
#18809A
oklch(55.7% 0.095 220)
-
Step 700
700
#036C83
oklch(49.1% 0.088 219.5)
-
Step 800
800
#0D586B
oklch(42.7% 0.074 220.3)
-
Step 900
900 (this color)
#174957
oklch(37.9% 0.057 219.9)
-
Step 950
950
#0F2B33
oklch(27.1% 0.037 219.3)
#174957 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) | #404758 | 0.047 |
| Deuteranopia (no green cones) | #374057 | 0.043 |
| Tritanopia (no blue cones) | #004E4D | 0.030 |
| Achromatopsia (no color) | #434343 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174957
#174957
oklch(37.9% 0.057 219.9)
- #5C372A
#5C372A
oklch(37.8% 0.058 40.1)
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 #174957, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.015
- Dark Grey Blue #29465B ΔE 0.021
- Dark Teal #014D4E ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.037
- Deep Teal #00555A ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.045
- Dark Blue Green #005249 ΔE 0.045
- Midnight Green #073B4C ΔE 0.050
Use #174957 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.