#174881
Closest named color: Twilight Blue (#0A437A). oklch(40.1% 0.109 254.8), rgb(23, 72, 129).
Aa
White text reads best on this color (9.20:1).
About this color
#174881 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.109 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.021 away. White text reads best on it, at 9.20:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.28:1 |
| White text | 9.20:1 |
Values
| HEX | #174881 |
| RGB | rgb(23, 72, 129) |
| HSL | hsl(212, 70%, 30%) |
| OKLCH | oklch(40.1% 0.109 254.8) |
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 #174881 | 9.20:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #174881 | 2.28:1 | Fails | Lc 13.1 | Not readable |
| #174881 text on white | 9.20:1 | AAA | Lc 90.8 | Preferred for body text |
| #174881 text on black | 2.28:1 | Fails | Lc -11.5 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF7
oklch(88.4% 0.045 254.5)
-
Step 300
300
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400
#65A3F0
oklch(70.7% 0.131 254.6)
-
Step 500
500
#378AEB
oklch(63.2% 0.166 254.7)
-
Step 600
600
#0071DA
oklch(55.6% 0.182 254.8)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900 (this color)
#174881
oklch(40.1% 0.109 254.8)
-
Step 950
950
#0B2747
oklch(27.1% 0.068 254.1)
#174881 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) | #2B4D83 | 0.025 |
| Deuteranopia (no green cones) | #184380 | 0.015 |
| Tritanopia (no blue cones) | #00565E | 0.083 |
| Achromatopsia (no color) | #484848 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174881
#174881
oklch(40.1% 0.109 254.8)
- #624000
#624000
oklch(40.1% 0.085 75)
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 #174881, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.021
- Light Navy #155084 ΔE 0.024
- Cobalt #1E488F ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.035
- Dusk Blue #26538D ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.060
- Marine Blue #01386A ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.065
Use #174881 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.