#1F4981
Closest named color: Light Navy (#155084). oklch(40.7% 0.105 256.6), rgb(31, 73, 129).
Aa
White text reads best on this color (9.01:1).
About this color
#1F4981 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.105 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.020 away. White text reads best on it, at 9.01:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #1F4981 |
| RGB | rgb(31, 73, 129) |
| HSL | hsl(214, 61%, 31%) |
| OKLCH | oklch(40.7% 0.105 256.6) |
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 #1F4981 | 9.01:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #1F4981 | 2.32:1 | Fails | Lc 13.6 | Not readable |
| #1F4981 text on white | 9.01:1 | AAA | Lc 90.4 | Preferred for body text |
| #1F4981 text on black | 2.32:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBF0
oklch(88.6% 0.034 255.2)
-
Step 300
300
#A7C3E9
oklch(80.9% 0.062 256.1)
-
Step 400
400
#78A3DD
oklch(70.7% 0.098 256.1)
-
Step 500
500
#558BD4
oklch(63.2% 0.125 256.4)
-
Step 600
600
#3973C1
oklch(55.6% 0.136 256.6)
-
Step 700
700
#2B60A7
oklch(49.1% 0.127 256.7)
-
Step 800
800 (this color)
#1F4981
oklch(40.7% 0.105 256.6)
-
Step 900
900
#23426C
oklch(37.7% 0.081 256.5)
-
Step 950
950
#15273F
oklch(27% 0.051 256.1)
#1F4981 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) | #2E4E83 | 0.023 |
| Deuteranopia (no green cones) | #1D4580 | 0.012 |
| Tritanopia (no blue cones) | #00565E | 0.082 |
| Achromatopsia (no color) | #494949 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4981
#1F4981
oklch(40.7% 0.105 256.6)
- #634200
#634200
oklch(40.6% 0.085 76.6)
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 #1F4981, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.020
- Cobalt #1E488F ΔE 0.024
- Twilight Blue #0A437A ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.033
- Dusk Blue #26538D ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.062
- Blueberry #464196 ΔE 0.064
Use #1F4981 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.