#315C7D
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.072 243.5), rgb(49, 92, 125).
Aa
White text reads best on this color (7.10:1).
About this color
#315C7D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.072 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.019 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #315C7D |
| RGB | rgb(49, 92, 125) |
| HSL | hsl(206, 44%, 34%) |
| OKLCH | oklch(45.9% 0.072 243.5) |
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 #315C7D | 7.10:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #315C7D | 2.95:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #315C7D text on white | 7.10:1 | AAA | Lc 84.5 | Fine for body text |
| #315C7D text on black | 2.95:1 | Fails | Lc -17.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#AAC4DA
oklch(80.8% 0.042 243.8)
-
Step 400
400
#7CA6C8
oklch(70.7% 0.068 243.3)
-
Step 500
500
#598FBA
oklch(63% 0.087 243.8)
-
Step 600
600
#3D79A6
oklch(55.6% 0.094 243.3)
-
Step 700
700
#2F668E
oklch(49.2% 0.087 242.9)
-
Step 800
800 (this color)
#315C7D
oklch(45.9% 0.072 243.5)
-
Step 900
900
#25455D
oklch(37.7% 0.056 242.6)
-
Step 950
950
#162837
oklch(26.9% 0.037 244.9)
#315C7D 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) | #4E5C7F | 0.035 |
| Deuteranopia (no green cones) | #43557C | 0.027 |
| Tritanopia (no blue cones) | #006467 | 0.058 |
| Achromatopsia (no color) | #585858 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315C7D
#315C7D
oklch(45.9% 0.072 243.5)
- #744E2A
#744E2A
oklch(45.8% 0.072 62.8)
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 #315C7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.021
- Denim #3B638C ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.038
- Dusk #4E5481 ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- Dusty Grape #545775 ΔE 0.045
Use #315C7D 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.