#315D79
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.067 238.5), rgb(49, 93, 121).
Aa
White text reads best on this color (7.06:1).
About this color
#315D79 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.067 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.018 away. White text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #315D79 |
| RGB | rgb(49, 93, 121) |
| HSL | hsl(203, 42%, 33%) |
| OKLCH | oklch(45.9% 0.067 238.5) |
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 #315D79 | 7.06:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #315D79 | 2.97:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #315D79 text on white | 7.06:1 | AAA | Lc 84.3 | Fine for body text |
| #315D79 text on black | 2.97:1 | Fails | Lc -17.6 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AEC4D4
oklch(80.9% 0.033 239.5)
-
Step 400
400
#83A6BE
oklch(70.8% 0.052 238.4)
-
Step 500
500
#6390AD
oklch(63.2% 0.066 237.5)
-
Step 600
600
#497999
oklch(55.5% 0.072 239.1)
-
Step 700
700 (this color)
#315D79
oklch(45.9% 0.067 238.5)
-
Step 800
800
#30536A
oklch(42.6% 0.056 238.8)
-
Step 900
900
#2B4556
oklch(37.7% 0.043 238.1)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#315D79 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) | #505D7A | 0.038 |
| Deuteranopia (no green cones) | #465579 | 0.032 |
| Tritanopia (no blue cones) | #006466 | 0.052 |
| Achromatopsia (no color) | #585858 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315D79
#315D79
oklch(45.9% 0.067 238.5)
- #744E30
#744E30
oklch(45.9% 0.068 58.3)
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 #315D79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.029
- Denim #3B638C ΔE 0.036
- Petrol #005F6A ΔE 0.041
- Dusty Grape #545775 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.046
- Dusk #4E5481 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.048
Use #315D79 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.