#174155
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.6% 0.058 232.3), rgb(23, 65, 85).
Aa
White text reads best on this color (10.91:1).
About this color
#174155 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.058 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.021 away. White text reads best on it, at 10.91:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.92:1 |
| White text | 10.91:1 |
Values
| HEX | #174155 |
| RGB | rgb(23, 65, 85) |
| HSL | hsl(199, 57%, 21%) |
| OKLCH | oklch(35.6% 0.058 232.3) |
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 #174155 | 10.91:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #174155 | 1.92:1 | Fails | Lc 8.8 | Not readable |
| #174155 text on white | 10.91:1 | AAA | Lc 95.1 | Preferred for body text |
| #174155 text on black | 1.92:1 | Fails | Lc -7.6 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A6C6D8
oklch(80.9% 0.043 232.7)
-
Step 400
400
#74A9C5
oklch(70.8% 0.069 232.1)
-
Step 500
500
#4D93B6
oklch(63.2% 0.088 232.2)
-
Step 600
600
#2B7DA2
oklch(55.7% 0.096 231.9)
-
Step 700
700
#1D698B
oklch(49.2% 0.089 232.6)
-
Step 800
800
#1B5671
oklch(42.8% 0.074 232.3)
-
Step 900
900 (this color)
#174155
oklch(35.6% 0.058 232.3)
-
Step 950
950
#122A35
oklch(27.1% 0.036 229.8)
#174155 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) | #374056 | 0.038 |
| Deuteranopia (no green cones) | #2F3A55 | 0.033 |
| Tritanopia (no blue cones) | #004648 | 0.035 |
| Achromatopsia (no color) | #3D3D3D | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174155
#174155
oklch(35.6% 0.058 232.3)
- #54331E
#54331E
oklch(35.6% 0.058 52.3)
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 #174155, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.021
- Charcoal #264653 ΔE 0.025
- Midnight Green #073B4C ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.040
- Dark Teal #014D4E ΔE 0.046
- Onyx #343A40 ΔE 0.046
- Gunmetal #293241 ΔE 0.053
Use #174155 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.