#1F296C
Closest named color: Marine (#042E60). oklch(31.7% 0.116 271.6), rgb(31, 41, 108).
Aa
White text reads best on this color (13.19:1).
About this color
#1F296C is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.116 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.035 away. White text reads best on it, at 13.19:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.59:1 |
| White text | 13.19:1 |
Values
| HEX | #1F296C |
| RGB | rgb(31, 41, 108) |
| HSL | hsl(232, 55%, 27%) |
| OKLCH | oklch(31.7% 0.116 271.6) |
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 #1F296C | 13.19:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #1F296C | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #1F296C text on white | 13.19:1 | AAA | Lc 99.2 | Preferred for body text |
| #1F296C text on black | 1.59:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#AABDFF
oklch(80.8% 0.096 271.7)
-
Step 400
400
#7F98FF
oklch(70.6% 0.153 271.7)
-
Step 500
500
#617AFF
oklch(63% 0.198 271.6)
-
Step 600
600
#4857FF
oklch(55.6% 0.245 271.6)
-
Step 700
700
#3A2BFD
oklch(49% 0.284 271.7)
-
Step 800
800
#2E29CC
oklch(42.7% 0.235 271.6)
-
Step 900
900
#262BA0
oklch(37.7% 0.183 271.7)
-
Step 950
950 (this color)
#1F296C
oklch(31.7% 0.116 271.6)
#1F296C 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) | #00346E | 0.035 |
| Deuteranopia (no green cones) | #002D6B | 0.027 |
| Tritanopia (no blue cones) | #003A46 | 0.096 |
| Achromatopsia (no color) | #303030 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F296C
#1F296C
oklch(31.7% 0.116 271.6)
- #3E3000
#3E3000
oklch(31.6% 0.065 91.1)
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 #1F296C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.035
- Midnight Blue #191970 ΔE 0.040
- Marine Blue #01386A ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.054
- Twilight Blue #0A437A ΔE 0.074
- Royal #0C1793 ΔE 0.077
- Space Cadet #2B2D42 ΔE 0.080
- Dark Royal Blue #02066F ΔE 0.083
Use #1F296C 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.