#31598D
Closest named color: Light Navy Blue (#2E5A88). oklch(46% 0.097 255.7), rgb(49, 89, 141).
Aa
White text reads best on this color (7.13:1).
About this color
#31598D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.097 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.010 away. White text reads best on it, at 7.13:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #31598D |
| RGB | rgb(49, 89, 141) |
| HSL | hsl(214, 48%, 37%) |
| OKLCH | oklch(46% 0.097 255.7) |
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 #31598D | 7.13:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #31598D | 2.94:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #31598D text on white | 7.13:1 | AAA | Lc 84.5 | Fine for body text |
| #31598D text on black | 2.94:1 | Fails | Lc -17.4 | 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 700.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ADC3DF
oklch(81% 0.046 254.5)
-
Step 400
400
#82A3CF
oklch(70.7% 0.074 255.8)
-
Step 500
500
#628CC3
oklch(63.2% 0.096 255.5)
-
Step 600
600
#4875AF
oklch(55.6% 0.104 255.4)
-
Step 700
700 (this color)
#31598D
oklch(46% 0.097 255.7)
-
Step 800
800
#30507A
oklch(42.7% 0.08 255.7)
-
Step 900
900
#2B4362
oklch(37.8% 0.061 255.3)
-
Step 950
950
#19273A
oklch(27% 0.041 256.3)
#31598D 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) | #425D8F | 0.024 |
| Deuteranopia (no green cones) | #36548C | 0.015 |
| Tritanopia (no blue cones) | #00656C | 0.079 |
| Achromatopsia (no color) | #585858 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31598D
#31598D
oklch(46% 0.097 255.7)
- #774F00
#774F00
oklch(46.1% 0.097 75.4)
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 #31598D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.010
- Denim Blue #3B5B92 ΔE 0.015
- Dusk Blue #26538D ΔE 0.022
- Denim #3B638C ΔE 0.034
- Dusky Blue #475F94 ΔE 0.034
- Dusk #4E5481 ΔE 0.039
- Twilight #4E518B ΔE 0.040
- Light Navy #155084 ΔE 0.040
Use #31598D 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.