#1F324D
Closest named color: Prussian Blue (#1D3557). oklch(31.5% 0.055 257.2), rgb(31, 50, 77).
Aa
White text reads best on this color (12.94:1).
About this color
#1F324D is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.055 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.018 away. White text reads best on it, at 12.94:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.62:1 |
| White text | 12.94:1 |
Values
| HEX | #1F324D |
| RGB | rgb(31, 50, 77) |
| HSL | hsl(215, 43%, 21%) |
| OKLCH | oklch(31.5% 0.055 257.2) |
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 #1F324D | 12.94:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #1F324D | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #1F324D text on white | 12.94:1 | AAA | Lc 99.1 | Preferred for body text |
| #1F324D text on black | 1.62:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#77A2E1
oklch(70.6% 0.104 257.8)
-
Step 500
500
#538AD8
oklch(63.1% 0.132 257.3)
-
Step 600
600
#3672C6
oklch(55.5% 0.145 257.4)
-
Step 700
700
#285FAB
oklch(49% 0.135 257.3)
-
Step 800
800
#234E8A
oklch(42.6% 0.111 257.3)
-
Step 900
900
#21426F
oklch(37.8% 0.087 256.7)
-
Step 950
950 (this color)
#1F324D
oklch(31.5% 0.055 257.2)
#1F324D 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) | #27344E | 0.014 |
| Deuteranopia (no green cones) | #212F4C | 0.010 |
| Tritanopia (no blue cones) | #05383C | 0.048 |
| Achromatopsia (no color) | #313131 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F324D
#1F324D
oklch(31.5% 0.055 257.2)
- #412D0D
#412D0D
oklch(31.4% 0.054 75.9)
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 #1F324D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.018
- Gunmetal #293241 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.030
- Midnight Green #073B4C ΔE 0.034
- Marine #042E60 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.047
- Onyx #343A40 ΔE 0.052
Use #1F324D 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.