#1F5684
Closest named color: Deep Sea Blue (#015482). oklch(44% 0.095 247.5), rgb(31, 86, 132).
Aa
White text reads best on this color (7.71:1).
About this color
#1F5684 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.095 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.017 away. White text reads best on it, at 7.71:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.72:1 |
| White text | 7.71:1 |
Values
| HEX | #1F5684 |
| RGB | rgb(31, 86, 132) |
| HSL | hsl(207, 62%, 32%) |
| OKLCH | oklch(44% 0.095 247.5) |
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 #1F5684 | 7.71:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #1F5684 | 2.72:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #1F5684 text on white | 7.71:1 | AAA | Lc 86.5 | Fine for body text |
| #1F5684 text on black | 2.72:1 | Fails | Lc -15.6 | Dividers and decoration only |
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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCED
oklch(88.6% 0.03 246.6)
-
Step 300
300
#A5C5E3
oklch(81% 0.055 246.8)
-
Step 400
400
#73A6D5
oklch(70.7% 0.088 247.2)
-
Step 500
500
#4B8FCA
oklch(63.1% 0.113 246.9)
-
Step 600
600
#2B78B7
oklch(55.6% 0.123 247.3)
-
Step 700
700
#1D649E
oklch(49% 0.115 248)
-
Step 800
800 (this color)
#1F5684
oklch(44% 0.095 247.5)
-
Step 900
900
#1D4467
oklch(37.6% 0.075 248.2)
-
Step 950
950
#12283C
oklch(26.9% 0.047 247.8)
#1F5684 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) | #415886 | 0.036 |
| Deuteranopia (no green cones) | #334F83 | 0.025 |
| Tritanopia (no blue cones) | #006167 | 0.069 |
| Achromatopsia (no color) | #535353 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F5684
#1F5684
oklch(44% 0.095 247.5)
- #754704
#754704
oklch(44.2% 0.095 67.6)
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 #1F5684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.017
- Dusk Blue #26538D ΔE 0.020
- Light Navy Blue #2E5A88 ΔE 0.020
- Light Navy #155084 ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.044
- Cobalt #1E488F ΔE 0.048
- Denim #3B638C ΔE 0.051
Use #1F5684 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.